Remove upload healing related dead code

[donatello]

Description

Some dead code related to upload healing removed in #5390 is being removed in this PR.

How Has This Been Tested?

Tests pass.

[codecov]

Codecov Report

Merging #5404 into master will decrease coverage by 0.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #5404      +/-   ##
==========================================
- Coverage   61.52%   61.51%   -0.02%     
==========================================
  Files         202      202              
  Lines       29387    29214     -173     
==========================================
- Hits        18081    17970     -111     
+ Misses       9906     9858      -48     
+ Partials     1400     1386      -14

Impacted Files	Coverage Δ
cmd/gateway-unsupported.go	0% <ø> (ø)	⬆️
cmd/fs-v1.go	72.61% <ø> (+0.2%)	⬆️
cmd/xl-v1-list-objects-heal.go	81.59% <ø> (+10.51%)	⬆️
cmd/notify-webhook.go	74.63% <0%> (-0.73%)	⬇️
cmd/xl-v1-multipart.go	70.25% <0%> (-0.33%)	⬇️

---

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[balamurugana]

Mint Automation

Test	Result
mint-xl.sh	✔️
mint-fs.sh	✔️
mint-dist-xl.sh	✔️
mint-gateway-azure.sh	✔️
mint-gateway-s3.sh	❌ more...

5404-b22f8ce/mint-gateway-s3.sh.log:

Running with
SERVER_ENDPOINT: minikube:32571
ACCESS_KEY:      AKIAJH7GQKYNU3C2ADXA
SECRET_KEY:      ***REDACTED***
ENABLE_HTTPS:    0
SERVER_REGION:   us-east-1
MINT_DATA_DIR:   /mint/data
MINT_MODE:       core

To get logs, run 'docker cp f185e4450c99:/mint/log /tmp/mint-logs'
(1/11) Running aws-sdk-go tests ... done in 2 seconds
(2/11) Running aws-sdk-php tests ... done in 1 minutes and 19 seconds
(3/11) Running aws-sdk-ruby tests ... done in 1 minutes and 25 seconds
(4/11) Running awscli tests ... done in 9 minutes and 28 seconds
(5/11) Running mc tests ... done in 5 minutes and 8 seconds
(6/11) Running minio-dotnet tests ... done in 1 minutes and 27 seconds
(7/11) Running minio-go tests ... done in 22 seconds
(8/11) Running minio-java tests ... FAILED in 48 seconds
{
  "name": "minio-java",
  "function": "setBucketPolicy(String bucketName, String objectPrefix, PolicyType policyType)",
  "duration": 4659,
  "status": "FAIL",
  "error": "error occured\nErrorResponse(code=AccessDenied, message=Access Denied., bucketName=null, objectName=null, resource=/minio-java-test-1fhjlm4/set-bucket-policy-read-write/minio-java-test-35d9dk, requestId=3L137, hostId=3L137)\nrequest={method=GET, url=http://minikube:32571/minio-java-test-1fhjlm4/set-bucket-policy-read-write/minio-java-test-35d9dk, headers=Host: minikube:32571\nUser-Agent: Minio (amd64; amd64) minio-java/dev\nx-amz-content-sha256: e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855\nx-amz-date: 20180115T192324Z\nAuthorization: AWS4-HMAC-SHA256 Credential=*REDACTED*/20180115/us-east-1/s3/aws4_request, SignedHeaders=host;x-amz-content-sha256;x-amz-date, Signature=*REDACTED*\n}\nresponse={code=403, headers=Accept-Ranges: bytes\nContent-Type: application/xml\nServer: Minio/DEVELOPMENT.2018-01-15T19-00-08Z (linux; amd64)\nVary: Origin\nX-Amz-Request-Id: 150A122BEAA10EBF\nDate: Mon, 15 Jan 2018 19:23:24 GMT\nTransfer-Encoding: chunked\n}\n >>> [io.minio.MinioClient.execute(MinioClient.java:1201), io.minio.MinioClient.executeGet(MinioClient.java:1294), io.minio.MinioClient.getObject(MinioClient.java:1594), io.minio.MinioClient.getObject(MinioClient.java:1506), FunctionalTest.testSetBucketPolicy(FunctionalTest.java:2291), FunctionalTest.setBucketPolicy_test4(FunctionalTest.java:2346), FunctionalTest.runQuickTests(FunctionalTest.java:2649), FunctionalTest.main(FunctionalTest.java:2691)]"
}

Executed 7 out of 11 tests successfully.

[harshavardhana]

LGTM 👍