apex: Remove 'zip' apex support

zip apex is no longer supported.

Bug: 279835185
Test: m
Change-Id: I651b0dc4e0efe766f61e97b1e5dd263e0ab74102
diff --git a/apex/vndk.go b/apex/vndk.go
index 68b3a40..26c60ed 100644
--- a/apex/vndk.go
+++ b/apex/vndk.go
@@ -112,14 +112,10 @@
 }
 
 // name is module.BaseModuleName() which is used as LOCAL_MODULE_NAME and also LOCAL_OVERRIDES_*
-func makeCompatSymlinks(name string, ctx android.ModuleContext, primaryApex bool) (symlinks android.InstallPaths) {
+func makeCompatSymlinks(name string, ctx android.ModuleContext) (symlinks android.InstallPaths) {
 	// small helper to add symlink commands
 	addSymlink := func(target string, dir android.InstallPath, linkName string) {
-		if primaryApex {
-			symlinks = append(symlinks, ctx.InstallAbsoluteSymlink(dir, linkName, target))
-		} else {
-			symlinks = append(symlinks, dir.Join(ctx, linkName))
-		}
+		symlinks = append(symlinks, ctx.InstallAbsoluteSymlink(dir, linkName, target))
 	}
 
 	// TODO(b/142911355): [VNDK APEX] Fix hard-coded references to /system/lib/vndk