[CI-SKIP] Remove bad null annotation (#5538)

Spigot-Server-Patches/MC-Utils.patch

@@ -2397,8 +2397,10 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
      }
  
 +
-+    @Nullable public UUID getUUID(String prefix) { return a(prefix); } // Paper - OBFHELPER
-+    @Nullable
++    /**
++     * You must use {@link #hasUUID(String)} before or else it <b>will</b> throw an NPE.
++     */
++    public UUID getUUID(String prefix) { return a(prefix); } // Paper - OBFHELPER
      public UUID a(String s) {
          return GameProfileSerializer.a(this.get(s));
      }