Revert "ensure primitive map keys are promoted to the widest possible type to avoid"

This reverts commit b98b0545de1d9977665a0cf4544d01391f162339.

Author: Nicolas Laurent

src/main/java/org/truffleruby/core/objectspace/WeakMapNodes.java

@@ -55,16 +55,6 @@ protected int size(RubyWeakMap map) {
     @CoreMethod(names = { "key?", "member?", "include?" }, required = 1)
     public abstract static class MemberNode extends CoreMethodArrayArgumentsNode {
 
-        @Specialization // ensures all integer keys are promoted to long
-        protected Object isMember(RubyWeakMap map, long key) {
-            return isMember(map, (Object) key);
-        }
-
-        @Specialization // ensures all floating keys are promoted to double
-        protected Object isMember(RubyWeakMap map, double key) {
-            return isMember(map, (Object) key);
-        }
-
         @Specialization
         protected boolean isMember(RubyWeakMap map, Object key) {
             return map.storage.get(key) != null;
@@ -74,16 +64,6 @@ protected boolean isMember(RubyWeakMap map, Object key) {
     @CoreMethod(names = "[]", required = 1)
     public abstract static class GetIndexNode extends CoreMethodArrayArgumentsNode {
 
-        @Specialization // ensures all integer keys are promoted to long
-        protected Object get(RubyWeakMap map, long key) {
-            return get(map, (Object) key);
-        }
-
-        @Specialization // ensures all floating keys are promoted to double
-        protected Object get(RubyWeakMap map, double key) {
-            return get(map, (Object) key);
-        }
-
         @Specialization
         protected Object get(RubyWeakMap map, Object key) {
             Object value = map.storage.get(key);
@@ -94,16 +74,6 @@ protected Object get(RubyWeakMap map, Object key) {
     @Primitive(name = "weakmap_aset")
     public abstract static class SetIndexNode extends CoreMethodArrayArgumentsNode {
 
-        @Specialization // ensures all integer keys are promoted to long
-        protected Object set(RubyWeakMap map, long key, Object value) {
-            return set(map, (Object) key, value);
-        }
-
-        @Specialization // ensures all floating keys are promoted to double
-        protected Object set(RubyWeakMap map, double key, Object value) {
-            return set(map, (Object) key, value);
-        }
-
         @Specialization
         protected Object set(RubyWeakMap map, Object key, Object value) {
             map.storage.put(key, value);