Fix some statically detected code issues

This includes: unnecessary semicolons, suppress warnings, switch statements, final/private qualifiers, Optional wrapping, conditionals, both inline and non-inline variables, ternaries, Collection putAll() calls, StringBuilders, and throws declarations.

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=244182539

java/google/registry/config/RegistryConfig.java

@@ -473,7 +473,7 @@ public final class RegistryConfig {
       PRODUCTION,
 
       /** Pilot mode, for everything else (e.g. sandbox). */
-      PILOT;
+      PILOT
     }
 
     /**