Cleanup constants: Remove unused ones and prefix each with its class

Author: rubengees

library/src/main/java/com/proxerme/library/connection/user/request/ToptenRequest.java

@@ -63,7 +63,7 @@ public ToptenRequest(@Nullable String userId, @Nullable String username,
 
     @Override
     protected int getTag() {
-        return ProxerTag.TOPTEN;
+        return ProxerTag.USER_TOPTEN;
     }
 
     @Override

library/src/main/java/com/proxerme/library/connection/user/request/UserInfoRequest.java

@@ -43,7 +43,7 @@ public UserInfoRequest(@Nullable String userId, @Nullable String username) {
 
     @Override
     protected int getTag() {
-        return ProxerTag.USERINFO;
+        return ProxerTag.USER_INFO;
     }
 
     @Override