HBASE-22690 Deprecate / Remove OfflineMetaRepair in hbase-2+

[brfrn169]

This is for the master branch. In this PR, I removed OfflineMetaRepair completely and remove some unnecessary logics in HBaseFsck.

[saintstack]

LGTM (caveat feedback from other reviewers). The removed methods are only used by OMR? Thanks @brfrn169

[Apache-HBase]

💔 -1 overall

Vote	Subsystem	Runtime	Comment
0	reexec	234	Docker mode activated.
		_ Prechecks _
+1	hbaseanti	0	Patch does not have any anti-patterns.
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		_ master Compile Tests _
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		_ Patch Compile Tests _
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		_ Other Tests _
-1	unit	14751	hbase-server in the patch failed.
+1	asflicense	23	The patch does not generate ASF License warnings.
		17943

Reason	Tests
Failed junit tests	hadoop.hbase.namespace.TestNamespaceAuditor

Subsystem	Report/Notes
Docker	Client=18.09.7 Server=18.09.7 base: https://builds.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-381/1/artifact/out/Dockerfile
GITHUB PR	#381
Optional Tests	dupname asflicense javac javadoc unit findbugs shadedjars hadoopcheck hbaseanti checkstyle compile
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[brfrn169]

Thank you for reviewing @saintstack

The removed methods are only used by OMR?

Yes.

[saintstack]

Ok. Good by me. Long as other concerns addressed, +1 from me @brfrn169

[Apache-HBase]

💔 -1 overall

Vote	Subsystem	Runtime	Comment
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		_ Prechecks _
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		_ master Compile Tests _
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		_ Patch Compile Tests _
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		_ Other Tests _
-1	unit	16119	hbase-server in the patch failed.
+1	asflicense	31	The patch does not generate ASF License warnings.
		19179

Reason	Tests
Failed junit tests	hadoop.hbase.client.TestSnapshotTemporaryDirectory
	hadoop.hbase.client.TestSnapshotDFSTemporaryDirectory

Subsystem	Report/Notes
Docker	Client=18.09.7 Server=18.09.7 base: https://builds.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-381/2/artifact/out/Dockerfile
GITHUB PR	#381
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[Apache-HBase]

💔 -1 overall

Vote	Subsystem	Runtime	Comment
0	reexec	87	Docker mode activated.
		_ Prechecks _
+1	hbaseanti	0	Patch does not have any anti-patterns.
+1	@author	0	The patch does not contain any @author tags.
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		_ master Compile Tests _
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		_ Patch Compile Tests _
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-1	javac	48	hbase-server in the patch failed.
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		_ Other Tests _
-1	unit	15758	hbase-server in the patch failed.
+1	asflicense	35	The patch does not generate ASF License warnings.
		19049

Subsystem	Report/Notes
Docker	Client=18.09.7 Server=18.09.7 base: https://builds.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-381/3/artifact/out/Dockerfile
GITHUB PR	#381
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[Apache-HBase]

💔 -1 overall

Vote	Subsystem	Runtime	Comment
0	reexec	57	Docker mode activated.
		_ Prechecks _
+1	hbaseanti	0	Patch does not have any anti-patterns.
+1	@author	0	The patch does not contain any @author tags.
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		_ master Compile Tests _
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		_ Patch Compile Tests _
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		_ Other Tests _
-1	unit	15069	hbase-server in the patch failed.
+1	asflicense	31	The patch does not generate ASF License warnings.
		17902

Reason	Tests
Failed junit tests	hadoop.hbase.util.TestFromClientSide3WoUnsafe

Subsystem	Report/Notes
Docker	Client=18.09.8 Server=18.09.8 base: https://builds.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-381/4/artifact/out/Dockerfile
GITHUB PR	#381
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[Apache-HBase]

💔 -1 overall

Vote	Subsystem	Runtime	Comment
0	reexec	266	Docker mode activated.
		_ Prechecks _
+1	dupname	0	No case conflicting files found.
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		_ master Compile Tests _
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		_ Other Tests _
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		20298

Subsystem	Report/Notes
Docker	Client=18.09.8 Server=18.09.8 base: https://builds.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-381/5/artifact/out/Dockerfile
GITHUB PR	#381
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[brfrn169]

Thank you for reviewing @saintstack. I'll commit this.

[Apache-HBase]

💔 -1 overall

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0	reexec	0	Docker mode activated.
-1	patch	10	#381 does not apply to master. Rebase required? Wrong Branch? See https://yetus.apache.org/documentation/in-progress/precommit-patchnames for help.

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GITHUB PR	#381
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[Apache-HBase]

🎊 +1 overall

Vote	Subsystem	Runtime	Comment
0	reexec	35	Docker mode activated.
		_ Prechecks _
+1	dupname	0	No case conflicting files found.
+1	hbaseanti	0	Patch does not have any anti-patterns.
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		_ master Compile Tests _
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		_ Patch Compile Tests _
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		_ Other Tests _
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+1	asflicense	30	The patch does not generate ASF License warnings.
		11176

Subsystem	Report/Notes
Docker	Client=18.09.8 Server=18.09.8 base: https://builds.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-381/6/artifact/out/Dockerfile
GITHUB PR	#381
Optional Tests	dupname asflicense javac javadoc unit spotbugs findbugs shadedjars hadoopcheck hbaseanti checkstyle compile
uname	Linux a1c7af72c81f 4.4.0-138-generic #164-Ubuntu SMP Tue Oct 2 17:16:02 UTC 2018 x86_64 GNU/Linux
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modules	C: hbase-server U: hbase-server
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[Apache-HBase]

💔 -1 overall

Vote	Subsystem	Runtime	Comment
0	reexec	0	Docker mode activated.
-1	patch	10	#381 does not apply to master. Rebase required? Wrong Branch? See https://yetus.apache.org/documentation/in-progress/precommit-patchnames for help.

Subsystem	Report/Notes
GITHUB PR	#381
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[Apache-HBase]

💔 -1 overall

Vote	Subsystem	Runtime	Comment
0	reexec	0	Docker mode activated.
-1	patch	10	#381 does not apply to master. Rebase required? Wrong Branch? See https://yetus.apache.org/documentation/in-progress/precommit-patchnames for help.

Subsystem	Report/Notes
GITHUB PR	#381
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