Stop requiring the system symlink to be installed

This allows hwservicemanager to be added seperately in system_ext by
devices without offending the artifact path checker.
This symlink will be installed on system unconditionally.

Test: m
Bug: 299166571
Change-Id: I795d903dbd1bcc4f5dad48909f82a4333f166a6d
diff --git a/Android.bp b/Android.bp
index 2009186..be2c463 100644
--- a/Android.bp
+++ b/Android.bp
@@ -112,7 +112,6 @@
     ],
     bootstrap: true,
     system_ext_specific: true,
-    required: ["hwservicemanager_compat_symlink_module"],
 }
 
 // Create symlink /system/bin/hwservicemanager -> /system/system_ext/bin/hwservicemanager