PEP 1: Remove redundant sentence

Author: hugovk

pep-0001.txt

@@ -629,10 +629,7 @@ if the email address is included, and just:
 
     Random J. User
 
-if the address is not given.  For historical reasons the format
-``[email protected] (Random J. User)`` may appear in a PEP;
-however, new PEPs must use the mandated format above, and it is acceptable to
-change to this format when PEPs are updated.
+if the address is not given.
 
 If there are multiple authors, each should be on a separate line
 following :rfc:`2822` continuation line conventions.  Note that personal