Disable OB Test Code Coverage (#5072)

Update template-OneBranch-Tests-libsandsamples.yaml

Author: gladjohn

build/template-OneBranch-Tests-libsandsamples.yaml

@@ -25,7 +25,7 @@ steps:
     testSelector: 'testAssemblies'
     testAssemblyVer2: '**\CacheCompat\CommonCache.Test.Unit\bin\**\CommonCache.Test.Unit.dll'
     searchFolder: '$(System.DefaultWorkingDirectory)'
-    codeCoverageEnabled: true
+    codeCoverageEnabled: false
     failOnMinTestsNotRun: true
     minimumExpectedTests: '1'
     runInParallel: true