Remove deleted file from libjingle_nacl.gyp
Remove deleted file from libjingle_nacl.gyp

See also https://codereview.webrtc.org/1537943002/, https://chromium.googlesource.com/external/webrtc/+/c1cd566cc6254802c9554ee006b0b809ff77aa55.

BUG=None
TBR=tfarina@chromium.org

Review URL: https://codereview.chromium.org/1538513005

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#366176}

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