Revert part of "Alloc OpRemove to accept a class to remove. Tested by…

Revert part of "Alloc OpRemove to accept a class to remove. Tested by test_gradien.py:test_grad_clip" This reverts part of commit 0e2d7a79. We don't need that and it is safer to not introduce it.

Revert part of "Alloc OpRemove to accept a class to remove. Tested by…
fa8e31d6 · Frederic Bastien · 52ce429f · fa8e31d6
--- a/theano/gof/opt.py
+++ b/theano/gof/opt.py
@@ -1545,10 +1545,8 @@ class OpRemove(LocalOptimizer):
        return [self.op]

    def transform(self, node):
-        if inspect.isclass(self.op):
-            if isinstance(node.op, self.op):
-                return node.inputs
-        elif node.op == self.op:
+        if node.op != self.op:
+            return False
        return node.inputs

    def __str__(self):