Cleanup MIPS specific link configuration
Cleanup MIPS specific link configuration

With recent rolls of chromium_revision, we've now rolled past
https://codereview.chromium.org/2048063002 so this workaround
is no longer needed.

BUG=webrtc:5977
NOTRY=True

Review-Url: https://codereview.webrtc.org/2071133003
Cr-Original-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#13207}
Cr-Mirrored-From: https://chromium.googlesource.com/external/webrtc
Cr-Mirrored-Commit: 4c7f8aec411d7c51ab3ea84d6ed05095752dd6ac

jchavanton/webrtc,Alkalyne/webrtctrunk,Alkalyne/webrtctrunk,Alkalyne/webrtctrunk,Alkalyne/webrtctrunk,Alkalyne/webrtctrunk,Alkalyne/webrtctrunk,jchavanton/webrtc,jchavanton/webrtc,jchavanton/webrtc,jchavanton/webrtc,Alkalyne/webrtctrunk,jchavanton/webrtc,jchavanton/webrtc,Alkalyne/webrtctrunk