Add walkers for some activations (#28)

paddleslim/prune/prune_walker.py

@@ -271,12 +271,24 @@ class bilinear_interp(activation):
         super(bilinear_interp, self).__init__(op, pruned_params, visited)
 
 
+@PRUNE_WORKER.register
+class nearest_interp(activation):
+    def __init__(self, op, pruned_params, visited):
+        super(nearest_interp, self).__init__(op, pruned_params, visited)
+
+
 @PRUNE_WORKER.register
 class relu(activation):
     def __init__(self, op, pruned_params, visited):
         super(relu, self).__init__(op, pruned_params, visited)
 
 
+@PRUNE_WORKER.register
+class leaky_relu(activation):
+    def __init__(self, op, pruned_params, visited):
+        super(leaky_relu, self).__init__(op, pruned_params, visited)
+
+
 @PRUNE_WORKER.register
 class floor(activation):
     def __init__(self, op, pruned_params, visited):