Remove redundant initializers

These values are anyway overwritten right after.

Author: darxriggs

src/main/java/org/jenkinsci/plugins/bitbucket/BitbucketBuildStatusHelper.java

@@ -187,8 +187,8 @@ public static String buildUrlFromBuild(Run<?, ?> build) {
     }
 
     private static BitbucketBuildStatus createBitbucketBuildStatusFromBuild(Run<?, ?> build, boolean overrideLatestBuild) throws Exception {
-        String buildKey = "";
-        String buildName = "";
+        String buildKey;
+        String buildName;
         String buildState = guessBitbucketBuildState(build.getResult());
         // bitbucket requires the key to be shorter than 40 chars
         if (overrideLatestBuild) {