remove x86_64-linux-glibc2.11-4.8 prebuilt

BUG:74125046
TEST:python toolchain/binutils/build.py --host=linux --arch=x86_64
Change-Id: I3f8e9ad2ca6f8106fe8634f480c60ef5a1f75ab4
1 file changed
tree: aa6f37369c1b06e9ab12aa40f2eedcd41e44effe
  1. default.xml