liblog: remove checks for __GNUC__

We already assume this in many other parts of the build.

Test: build
Change-Id: Ie685e83963eac942d0d176bb2394b5d3a5b86cac
2 files changed
tree: da18cf3d513e3f0683d7b34bb714e466a634d7b5
  1. liblog/
  2. logcat/
  3. logd/
  4. logwrapper/