revert metadataCaching

[xiangyushawn]

revert merge 369e913:
Merge pull request #345 from Microsoft/metadataCaching

just for your information, the git command I used is:
git revert 369e913e0ba30ddbab658fc32c66ed56a6d53014 -m 1

[codecov-io]

Codecov Report

Merging #377 into RTW_6.2.0 will increase coverage by 0.14%.
The diff coverage is 77.57%.

@@               Coverage Diff               @@
##             RTW_6.2.0     #377      +/-   ##
===============================================
+ Coverage        40.27%   40.41%   +0.14%     
+ Complexity        1896     1826      -70     
===============================================
  Files              107      103       -4     
  Lines            24486    23666     -820     
  Branches          4039     3919     -120     
===============================================
- Hits              9862     9565     -297     
+ Misses           12786    12427     -359     
+ Partials          1838     1674     -164

Flag	Coverage Δ	Complexity Δ
#JDBC41	40.18% <77.57%> (+0.05%)	1814 <38> (-74)	⬇️
#JDBC42	40.36% <77.57%> (+0.17%)	1826 <38> (-64)	⬇️

Impacted Files	Coverage Δ	Complexity Δ
...om/microsoft/sqlserver/jdbc/SQLServerResource.java	100% <ø> (ø)	4 <0> (ø)	⬇️
.../com/microsoft/sqlserver/jdbc/SQLServerDriver.java	75.3% <100%> (-0.15%)	25 <0> (ø)
...m/microsoft/sqlserver/jdbc/SQLServerStatement.java	59.59% <100%> (+0.22%)	138 <0> (+8)	⬆️
.../microsoft/sqlserver/jdbc/SQLServerDataSource.java	46.53% <100%> (-0.59%)	64 <2> (-2)
...oft/sqlserver/jdbc/SQLServerParameterMetaData.java	25.52% <100%> (ø)	30 <1> (ø)	⬇️
...oft/sqlserver/jdbc/SQLServerPreparedStatement.java	41.06% <68.83%> (-1.33%)	115 <15> (-21)
.../microsoft/sqlserver/jdbc/SQLServerConnection.java	44.74% <78.68%> (-0.51%)	269 <20> (+1)
src/main/java/microsoft/sql/DateTimeOffset.java	37.14% <0%> (-2.86%)	8% <0%> (-2%)
...a/com/microsoft/sqlserver/jdbc/ParameterUtils.java	62.22% <0%> (-2.23%)	19% <0%> (-1%)
...a/com/microsoft/sqlserver/jdbc/PLPInputStream.java	39.75% <0%> (-1.21%)	28% <0%> (-1%)
... and 13 more

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