Drop support for EOL Python 3.3 (#1019)

test/completion/pep0484_typing.py

@@ -243,7 +243,7 @@ for key in x.keys():
 for value in x.values():
     #? int()
     value
-# python >= 3.2
+# python >= 3.4
 
 class TestDefaultDict(typing.DefaultDict[str, int]):
     def setdud(self):
@@ -271,7 +271,7 @@ for key in x.keys():
 for value in x.values():
     #? int()
     value
-# python >= 3.2
+# python >= 3.4
 
 
 """