Remove unused bsd and completed py3 transition

Author: hugovk

core-developers/experts.rst

@@ -315,7 +315,6 @@ algorithms          rhettinger*
 argument clinic     larryhastings, AlexWaygood*, erlend-aasland
 ast/compiler        benjaminp, 1st1, pablogsal, markshannon, isidentical, brandtbucher, carljm, iritkatriel
 autoconf/makefiles  Yhg1s*
-bsd
 issue tracker       ezio-melotti
 buildbots           zware, pablogsal
 bytecode            benjaminp, 1st1, markshannon, brandtbucher, carljm, iritkatriel
@@ -351,7 +350,6 @@ peg parser          gvanrossum, pablogsal, lysnikolaou
 performance         vstinner, serhiy-storchaka, 1st1, rhettinger, markshannon, brandtbucher, carljm, Fidget-Spinner,
                     AlexWaygood*
 pip                 ncoghlan, dstufft, pfmoore, Marcus.Smith^, pradyunsg
-py3 transition      benjaminp
 release management  tarekziade, malemburg, benjaminp, warsaw,
                     gvanrossum, anthonybaxter^, merwok, ned-deily,
                     birkenfeld, JulienPalard, hugovk