Remove glibc-2.15

All uses of glibc 2.15 were replaced over a week ago. Everything appears
to be running along smoothly at this point, so we can now remove the
old.

Bug: 111358231
Test: repo sync && lunch aosp_marlin-eng && m (same on internal master,
      s/aosp_marlin-eng/marlin-eng/`)

Change-Id: I0f862f759b6ff716c6dc60252ef8f52db2bf16b7
1 file changed
tree: c837231f8291dac6441d231c0a688731af6376e5
  1. aosp-with-blobs.xml
  2. default.xml
  3. GLOBAL-PREUPLOAD.cfg