Remove duplicate specialization

Author: msimacek

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/nodes/attributes/ObjectAttributeNode.java

@@ -41,8 +41,6 @@
 package com.oracle.graal.python.nodes.attributes;
 
 import com.oracle.graal.python.builtins.objects.getsetdescriptor.HiddenPythonKey;
-import com.oracle.graal.python.builtins.objects.object.PythonObject;
-import com.oracle.graal.python.builtins.objects.object.PythonObjectLibrary;
 import com.oracle.graal.python.nodes.PGuards;
 import com.oracle.graal.python.nodes.PNodeWithContext;
 import com.oracle.graal.python.nodes.util.CannotCastException;
@@ -64,10 +62,6 @@ protected static Object attrKey(Object key, CastToJavaStringNode castNode) {
         }
     }
 
-    protected static boolean hasBuiltinDict(PythonObject object, PythonObjectLibrary lib) {
-        return lib.getDict(object) != null;
-    }
-
     protected static Location getLocationOrNull(Property prop) {
         return prop == null ? null : prop.getLocation();
     }

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/nodes/attributes/ReadAttributeFromObjectNode.java

@@ -144,26 +144,11 @@ protected static Object readFromBuiltinModuleDict(PythonModule object, String ke
         }
     }
 
-    // read from a builtin dict
-    @Specialization(guards = {"!isHiddenKey(key)", "hasBuiltinDict(object, lib)"})
-    protected static Object readFromBuiltinDict(PythonObject object, String key,
-                    @CachedLibrary(limit = "MAX_DICT_TYPES") PythonObjectLibrary lib,
-                    @Cached HashingCollectionNodes.GetDictStorageNode getDictStorageNode,
-                    // limit 2: string only or mixed dict
-                    @CachedLibrary(limit = "MAX_DICT_TYPES") HashingStorageLibrary hlib) {
-        Object value = hlib.getItem(getDictStorageNode.execute(lib.getDict(object)), key);
-        if (value == null) {
-            return PNone.NO_VALUE;
-        } else {
-            return value;
-        }
-    }
-
     // read from the Dict
     @Specialization(guards = {
                     "!isHiddenKey(key)",
                     "lib.hasDict(object)"
-    }, replaces = {"readFromBuiltinDict", "readFromBuiltinModuleDict"})
+    }, replaces = "readFromBuiltinModuleDict")
     protected static Object readFromDict(PythonObject object, Object key,
                     @CachedLibrary(limit = "MAX_DICT_TYPES") PythonObjectLibrary lib,
                     @Cached HashingCollectionNodes.GetDictStorageNode getDictStorage,