remove optimiser param from __init__.py

theano/gof/opt.py

@@ -1131,12 +1131,12 @@ class LocalMetaOptimizer(LocalOptimizer):
 
     """
 
-    def __init__(self, optimizers=()):
-        self._tracks = [x for o in optimizers for x in o.tracks()]
-        self.optimizers = list(optimizers)
+    def __init__(self):
         self.verbose = config.metaopt.verbose
         self.track_dict = defaultdict(lambda: [])
         self.tag_dict = defaultdict(lambda: [])
+        self._tracks = []
+        self.optimizers = []
 
     def register(self, optimizer, tag_list):
         self.optimizers.append(optimizer)

theano/gpuarray/opt.py

@@ -2007,8 +2007,8 @@ def local_abstractconv3d_gradinputs_gemm_alt(node):
 
 class ConvMetaOptimizer(LocalMetaOptimizer):
 
-    def __init__(self, optimizers=()):
-        super(ConvMetaOptimizer, self).__init__(optimizers)
+    def __init__(self):
+        super(ConvMetaOptimizer, self).__init__()
 
     def time_call(self, fn):
         start = time.time()