Migrate to type annotations

Author: matusvalo

doc/data/messages/m/missing-type-doc/bad.py

@@ -1,7 +1,6 @@
-def integer_sum(a, b):  # [missing-type-doc]
+def integer_sum(a: int, b):  # [missing-type-doc]
     """Returns sum of two integers
     :param a: first integer
-    :type a: int
     :param b: second integer
     """
     return a + b

doc/data/messages/m/missing-type-doc/good.py

@@ -1,8 +1,6 @@
-def integer_sum(a, b):
+def integer_sum(a: int, b: int):
     """Returns sum of two integers
     :param a: first integer
-    :type a: int
     :param b: second integer
-    :type b: int
     """
     return a + b