GMMK Pro: fix unintended volume encoder taps (#17129)

keyboards/gmmk/pro/rev1/ansi/keymaps/mattgauf/keymap.c

@@ -173,7 +173,8 @@ bool encoder_update_user(uint8_t index, bool clockwise) {
             }
         }
     }
-    return true;
+    //return true; //set to return false to counteract enabled encoder in pro.c
+    return false;
 }