Remove unused /selinux_version

This file is no longer needed because it was needed for supporting
reloadable/dynamic SELinux policy which is no longer supported.

Test: Clean build, flash, device boots without additional denials.
      Reboot to recovery works, no additional denials.
Bug: 33642277
Change-Id: Ie65e74b8c8437694bc1ea019ab844f60f9e89ade
diff --git a/target/product/embedded.mk b/target/product/embedded.mk
index cd33693..c77bce2 100644
--- a/target/product/embedded.mk
+++ b/target/product/embedded.mk
@@ -93,8 +93,7 @@
     plat_mac_permissions.xml \
     plat_property_contexts \
     plat_seapp_contexts \
-    plat_service_contexts \
-    selinux_version
+    plat_service_contexts
 
 # AID Generation for
 # <pwd.h> and <grp.h>