Backing out the fast path for interned string compares again as requested.

Python/ceval.c

@@ -1778,21 +1778,6 @@ eval_frame(PyFrameObject *f)
 				x = res ? Py_True : Py_False;
 				Py_INCREF(x);
 			}
-			else if (v == w && PyString_CheckExact(v)) {
-			    	/* Fast-path for comparing interned strings */
-				switch (oparg) {
-				case EQ: x = Py_True; break;
-				case LE: x = Py_True; break;
-				case GE: x = Py_True; break;
-				case NE: x = Py_False; break;
-				case GT: x = Py_False; break;
-				case LT: x = Py_False; break;
-				case IS: x = Py_True; break;
-				case IS_NOT: x = Py_False; break;
-				default: goto slow_compare;
-				}
-				Py_INCREF(x);
-			}
 			else {
 			  slow_compare:
 				x = cmp_outcome(oparg, v, w);