Remove external/libiio from manifest

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Test: TreeHugger
Change-Id: I04e11f83e1047a7afe8fb327e9db14458ae2e1bb
1 file changed
tree: 345eec53e8e3ea2cc3e51b8b0ab995a337d0210a
  1. default.xml
  2. GLOBAL-PREUPLOAD.cfg
  3. OWNERS