Fix 2 @Bind("this") warnings

Author: eregon

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/modules/cext/PythonCextTypeBuiltins.java

@@ -408,15 +408,15 @@ abstract static class GraalPyPrivate_Type_SetBufferProcs extends CApiBinaryBuilt
 
         @Specialization
         static Object setBuiltinClassType(PythonBuiltinClassType clazz, Object bufferProcs,
-                        @Bind("this") Node inliningTarget,
+                        @Bind Node inliningTarget,
                         @Shared @Cached HiddenAttr.WriteNode writeAttrNode) {
             writeAttrNode.execute(inliningTarget, PythonContext.get(inliningTarget).lookupType(clazz), AS_BUFFER, bufferProcs);
             return PNone.NO_VALUE;
         }
 
         @Specialization(guards = "isPythonClass(object)")
         static Object set(PythonAbstractObject object, Object bufferProcs,
-                        @Bind("this") Node inliningTarget,
+                        @Bind Node inliningTarget,
                         @Shared @Cached HiddenAttr.WriteNode writeAttrNode) {
             writeAttrNode.execute(inliningTarget, object, AS_BUFFER, bufferProcs);
             return PNone.NO_VALUE;