#1286 Remove header comments from stubs (#1292)

- Updates documentation related to previously required comment headers.
- Removes all comment headers from stubs
- Occasionally included a header for stubs that were noted to be incomplete or contained todo's.

stdlib/2/email/MIMEText.pyi

@@ -1,7 +1,3 @@
-# Stubs for email.MIMEText (Python 2)
-#
-# NOTE: This dynamically typed stub was automatically generated by stubgen.
-
 from email.mime.nonmultipart import MIMENonMultipart
 
 class MIMEText(MIMENonMultipart):

stdlib/2/email/_parseaddr.pyi

@@ -1,7 +1,3 @@
-# Stubs for email._parseaddr (Python 2)
-#
-# NOTE: This dynamically typed stub was automatically generated by stubgen.
-
 from typing import Any
 
 def parsedate_tz(data): ...

stdlib/2/email/mime/base.pyi

@@ -1,6 +1,4 @@
-# Stubs for email.mime.base (Python 2)
-#
-# NOTE: This dynamically typed stub was automatically generated by stubgen.
+# NOTE: This stub is incomplete.
 
 # import message
 

stdlib/2/email/mime/multipart.pyi

@@ -1,7 +1,3 @@
-# Stubs for email.mime.multipart (Python 2)
-#
-# NOTE: This dynamically typed stub was automatically generated by stubgen.
-
 from email.mime.base import MIMEBase
 
 class MIMEMultipart(MIMEBase):

stdlib/2/email/mime/nonmultipart.pyi

@@ -1,7 +1,3 @@
-# Stubs for email.mime.nonmultipart (Python 2)
-#
-# NOTE: This dynamically typed stub was automatically generated by stubgen.
-
 from email.mime.base import MIMEBase
 
 class MIMENonMultipart(MIMEBase):

stdlib/2/email/mime/text.pyi

@@ -1,7 +1,3 @@
-# Stubs for email.mime.text (Python 2)
-#
-# NOTE: This dynamically typed stub was automatically generated by stubgen.
-
 from email.mime.nonmultipart import MIMENonMultipart
 
 class MIMEText(MIMENonMultipart):

stdlib/2/email/utils.pyi

@@ -1,7 +1,3 @@
-# Stubs for email.utils (Python 2)
-#
-# Derived from stub automatically generated by stubgen.
-
 from email._parseaddr import AddressList as _AddressList
 from email._parseaddr import mktime_tz as mktime_tz
 from email._parseaddr import parsedate as _parsedate