Docs: Remove GitHub links from docs/samples/new/index.html
Docs: Remove GitHub links from docs/samples/new/index.html

Links were present as a workaround for the lack of a code browser
during the L Developer Preview, and are no longer necessary.

Issue: 18511191
Change-Id: I61068e3ff99fc5d8e4b3346c50d05fcd7f02ab32

xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base