Trim down to the folks I think have real context

pkg/proxy/OWNERS

 approvers:
-- ArtfulCoder
 - thockin
+- bprashanth
+- matchstick
 reviewers:
 - thockin
 - lavalamp
 - smarterclayton
-- wojtek-t
 - brendandburns
-- derekwaynecarr
 - vishh
-- mikedanese
-- liggitt
 - bprashanth
-- erictune
-- davidopp
-- luxas
 - justinsb
-- eparis
-- jbeda
-- dims
-- krousey
-- markturansky
-- vmarmol
-- girishkalele
-- jdef
-- xiang90
 - freehan
-- a-robinson
-- m1093782566
-- aveshagarwal
-- ingvagabund
-- resouer
-- cjcullen
-- fabianofranz
-- david-mcmahon
-- mfojtik
 - dcbw
-- asalkeld
-- ddysher
-- nhlfr
-- sdminonne
-- goltermann