SpringSecurityAuthServiceTest: removed unused members.

Based on warnings from groovy-eclipse-compiler.

Should be in 3b3078279f179f5f587b432338b34411b44bea21 commit.

No functional changes.
CatalogUtilsTest: renamed two test cases.

Found during porting unit tests to SpockFramework.

No functional changes.
CatalogUtilsTest: renamed two local variables.

Found during porting unit tests to SpockFramework.

No functional changes.