Remove redundant 'static' modifiers

enums, interfaces, and field members in interfaces are by default
static, so don't need to be explicitly declared so.

Change-Id: I29270c28be30965767519ad0105a7d93a24e0ab4

gerrit-reviewdb/src/main/java/com/google/gerrit/reviewdb/client/Account.java

@@ -59,7 +59,7 @@ import java.sql.Timestamp;
  * </ul>
  */
 public final class Account {
-  public static enum FieldName {
+  public enum FieldName {
     FULL_NAME, USER_NAME, REGISTER_NEW_EMAIL
   }
 

gerrit-reviewdb/src/main/java/com/google/gerrit/reviewdb/client/Change.java

@@ -281,7 +281,7 @@ public final class Change {
    * codes ('A'..'Z') indicate a change that is closed and cannot be further
    * modified.
    * */
-  public static enum Status {
+  public enum Status {
     /**
      * Change is open and pending review, or review is in progress.
      *

gerrit-reviewdb/src/main/java/com/google/gerrit/reviewdb/client/Patch.java

@@ -68,7 +68,7 @@ public final class Patch {
   }
 
   /** Type of modification made to the file path. */
-  public static enum ChangeType implements CodedEnum {
+  public enum ChangeType implements CodedEnum {
     /** Path is being created/introduced by this patch. */
     ADDED('A'),
 
@@ -113,7 +113,7 @@ public final class Patch {
   }
 
   /** Type of formatting for this patch. */
-  public static enum PatchType implements CodedEnum {
+  public enum PatchType implements CodedEnum {
     /**
      * A textual difference between two versions.
      *

gerrit-reviewdb/src/main/java/com/google/gerrit/reviewdb/client/PatchLineComment.java

@@ -60,7 +60,7 @@ public final class PatchLineComment {
   public static final char STATUS_DRAFT = 'd';
   public static final char STATUS_PUBLISHED = 'P';
 
-  public static enum Status {
+  public enum Status {
     DRAFT(STATUS_DRAFT),
 
     PUBLISHED(STATUS_PUBLISHED);