Drop build-tools/sysroot symlink.

Now that all references to build/build-tools/sysroot
has been changed to build/kernel/build-tools/sysroot properly,
the symlink may be dropped.

Test: TH
Bug: 204425264
Change-Id: If774e4cbd93216bea90388b3ff5f6bfccfdba870
(cherry picked from commit 352e9076d522235cdba90c0307f1a7b45f34be7d)
1 file changed
tree: 2b7d2b25590dfe767b9b81e5903648d84816dc90
  1. default.xml