Revert "Add /bootstrap-apex"

Revert submission 2666915-share-bootstrap

Reason for revert: b/293949266 vold_prepare_subdirs fails to create apexdata directories.

Reverted changes: /q/submissionid:2666915-share-bootstrap

Change-Id: Idab6db691c1130a1f5d596f5e05783cab7fdde05
diff --git a/private/file_contexts b/private/file_contexts
index c063c3a..123e4ed 100644
--- a/private/file_contexts
+++ b/private/file_contexts
@@ -32,7 +32,6 @@
 /second_stage_resources u:object_r:tmpfs:s0
 /sys                u:object_r:sysfs:s0
 /apex               u:object_r:apex_mnt_dir:s0
-/bootstrap-apex     u:object_r:apex_mnt_dir:s0
 
 # Postinstall directories
 /postinstall         u:object_r:postinstall_mnt_dir:s0