Fix compilation with enable_webrtc=0

This problem was already fixed in r360646, but was broken again due
incorrect merge in r361205.

TBR=kelvinp@chromium.org

Review URL: https://codereview.chromium.org/1468283002

Cr-Commit-Position: refs/heads/master@{#361219}

remoting/remoting.gyp

@@ -237,8 +237,6 @@
         '../net/net.gyp:net',
         '../third_party/expat/expat.gyp:expat',
         '../third_party/libjingle/libjingle.gyp:libjingle',
-        '../third_party/libjingle/libjingle.gyp:libjingle_webrtc',
-        '../third_party/libjingle/libjingle.gyp:libpeerconnection',
         'remoting_base',
       ],
       'export_dependent_settings': [