kleaf: Delete build/BUILD.bazel symlink.

All references to the //build package has been migrated to
the //build/kernel package. Hence, it is okay to delete this
symlink now.

Test: TH
Bug: 204425264
Change-Id: Ic4a87d3369638700ec44a129e91fae4e8c78f4c3
diff --git a/default.xml b/default.xml
index e1f7046..fe531b6 100644
--- a/default.xml
+++ b/default.xml
@@ -12,8 +12,6 @@
     <linkfile src="build_abi.sh" dest="build/build_abi.sh" />
     <linkfile src="build_test.sh" dest="build/build_test.sh" />
     <linkfile src="build_utils.sh" dest="build/build_utils.sh" />
-    <!-- TODO(b/204425264): Remove unused scripts and unused symlinks -->
-    <linkfile src="BUILD.bazel" dest="build/BUILD.bazel" />
     <linkfile src="config.sh" dest="build/config.sh" />
     <linkfile src="envsetup.sh" dest="build/envsetup.sh" />
     <linkfile src="_setup_env.sh" dest="build/_setup_env.sh" />