Fix Spigot annotation mistakes

while some of these may of been true, they are extreme cases and cause
a ton of noise to plugin developers.

Use ApiStatus.Internal instead of Deprecated for actual internal API
that continues to have use (internally).

These do not help plugin developers if they bring moise noise than value.

paper-api/src/main/java/org/bukkit/Difficulty.java

@@ -44,9 +44,9 @@ public enum Difficulty {
      * Gets the difficulty value associated with this Difficulty.
      *
      * @return An integer value of this difficulty
-     * @deprecated Magic value
+     * @apiNote Internal Use Only
      */
-    @Deprecated(since = "1.6.2")
+    @org.jetbrains.annotations.ApiStatus.Internal // Paper
     public int getValue() {
         return value;
     }
@@ -57,9 +57,9 @@ public enum Difficulty {
      * @param value Value to check
      * @return Associative {@link Difficulty} with the given value, or null if
      *     it doesn't exist
-     * @deprecated Magic value
+     * @apiNote Internal Use Only
      */
-    @Deprecated(since = "1.6.2")
+    @org.jetbrains.annotations.ApiStatus.Internal // Paper
     @Nullable
     public static Difficulty getByValue(final int value) {
         return BY_ID.get(value);