remove CSMGrad view_map as it was always allocating memory.

theano/sparse/basic.py

@@ -802,8 +802,10 @@ class CSMGrad(gof.op.Op):
 
     def __init__(self, kmap=None):
         self.kmap = kmap
-        if self.kmap is None:
-            self.view_map = {0: [1]}
+        #This class always allocate a new output.
+        #I keep this here to help GD understand what this kmap think is.
+        #if self.kmap is None:
+        #    self.view_map = {0: [1]}
 
     def __eq__(self, other):
         return type(self) == type(other) and _kmap_eq(self.kmap, other.kmap)