godoc: remove "need more packages?" link
godoc: remove "need more packages?" link

Its need will be addressed in another way by the redesign.

Fixes issue 2719.

R=golang-dev, bradfitz
CC=golang-dev
http://codereview.appspot.com/5536062

firebitsbr/golang-old,wesolows/golang,wesolows/golang,firebitsbr/golang-old,wesolows/golang-old,wesolows/golang-old,wesolows/golang,wesolows/golang-old,firebitsbr/golang-old,wesolows/golang-old,firebitsbr/golang-old,firebitsbr/golang-old,wesolows/golang-old,wesolows/golang-old,wesolows/golang,firebitsbr/golang-old,wesolows/golang,wesolows/golang,wesolows/golang,firebitsbr/golang-old,firebitsbr/golang-old,wesolows/golang-old