Remove bogus specialization from PySequenceSizeNode

Author: msimacek

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/lib/PySequenceSizeNode.java

@@ -45,7 +45,6 @@
 
 import com.oracle.graal.python.builtins.objects.bytes.PBytesLike;
 import com.oracle.graal.python.builtins.objects.common.HashingStorageNodes;
-import com.oracle.graal.python.builtins.objects.common.PHashingCollection;
 import com.oracle.graal.python.builtins.objects.list.PList;
 import com.oracle.graal.python.builtins.objects.set.PBaseSet;
 import com.oracle.graal.python.builtins.objects.str.PString;
@@ -106,12 +105,6 @@ static int doTuple(PTuple object) {
         return object.getSequenceStorage().length();
     }
 
-    @Specialization(guards = "!isAnySet(object)")
-    static int doPHashingCollection(Node inliningTarget, PHashingCollection object,
-                    @Exclusive @Cached PRaiseNode.Lazy raise) {
-        throw raise.get(inliningTarget).raise(TypeError, ErrorMessages.IS_NOT_A_SEQUENCE, object);
-    }
-
     @Specialization(guards = "cannotBeOverridden(object, inliningTarget, getClassNode)")
     static int doSet(Node inliningTarget, PBaseSet object,
                     @Shared("getClass") @SuppressWarnings("unused") @Cached GetPythonObjectClassNode getClassNode,