Review Request 42944: SENTRY-1027: Fix PMD error for unused field when enable Hive authz V2

[Dapeng Sun]

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Review request for sentry.


Bugs: SENTRY-1027
    https://issues.apache.org/jira/browse/SENTRY-1027


Repository: sentry


Description
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Fix unused fields according PMD


Diffs
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sentry-binding/sentry-binding-hive-v2/src/main/java/org/apache/sentry/binding/hive/v2/authorizer/DefaultSentryAccessController.java
 9e72b78 

Diff: https://reviews.apache.org/r/42944/diff/


Testing
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Remove unused fields **grantorPrincipal at grantOrRevokePrivlegeOnRole** and 
**grantOption at grantOrRevokePrivlegeOnRole**


Thanks,

Dapeng Sun