Removed `same_as` methods from Plex.Actions.Action (GH-3847)

It seems to be unused and it looked like the existing implementation was faulty.

Cython/Plex/Actions.pxd

@@ -2,17 +2,14 @@
 
 cdef class Action:
     cdef perform(self, token_stream, text)
-    cpdef same_as(self, other)
 
 cdef class Return(Action):
     cdef object value
     cdef perform(self, token_stream, text)
-    cpdef same_as(self, other)
 
 cdef class Call(Action):
     cdef object function
     cdef perform(self, token_stream, text)
-    cpdef same_as(self, other)
 
 cdef class Method(Action):
     cdef str name
@@ -21,7 +18,6 @@ cdef class Method(Action):
 cdef class Begin(Action):
     cdef object state_name
     cdef perform(self, token_stream, text)
-    cpdef same_as(self, other)
 
 cdef class Ignore(Action):
     cdef perform(self, token_stream, text)

Cython/Plex/Actions.py

@@ -6,14 +6,10 @@ Python Lexical Analyser
 Actions for use in token specifications
 """
 
-
 class Action(object):
     def perform(self, token_stream, text):
         pass  # abstract
 
-    def same_as(self, other):
-        return self is other
-
     def __copy__(self):
         return self  # immutable, no need to copy
 
@@ -33,9 +29,6 @@ class Return(Action):
     def perform(self, token_stream, text):
         return self.value
 
-    def same_as(self, other):
-        return isinstance(other, Return) and self.value == other.value
-
     def __repr__(self):
         return "Return(%r)" % self.value
 
@@ -54,9 +47,6 @@ class Call(Action):
     def __repr__(self):
         return "Call(%s)" % self.function.__name__
 
-    def same_as(self, other):
-        return isinstance(other, Call) and self.function is other.function
-
 
 class Method(Action):
     """
@@ -79,9 +69,6 @@ class Method(Action):
             if self.kwargs is not None else '')
         return "Method(%s%s%s)" % (self.name, ', ' if kwargs else '', kwargs)
 
-    def same_as(self, other):
-        return isinstance(other, Method) and self.name == other.name and self.kwargs == other.kwargs
-
 
 class Begin(Action):
     """
@@ -99,9 +86,6 @@ class Begin(Action):
     def __repr__(self):
         return "Begin(%s)" % self.state_name
 
-    def same_as(self, other):
-        return isinstance(other, Begin) and self.state_name == other.state_name
-
 
 class Ignore(Action):
     """