Remove VNDK related code from Soong

As VNDK definition is fully removed from Android.bp, VNDK related code
can be removed from Soong. This change removes VNDK related code except
VNDK prebuilt which is required to build former versions of VNDK APEX
with prebuilts.

Bug: 330100430
Test: AOSP CF build succeeded
Ignore-AOSP-First: Resolve Conflict
Change-Id: Id9c8993343221c8464c97296bde0ff40b14b9b0b

cc/sanitize.go

@@ -681,12 +681,6 @@ func (sanitize *sanitize) begin(ctx BaseModuleContext) {
 		s.Integer_overflow = nil
 	}
 
-	// Also disable CFI for VNDK variants of components
-	if ctx.isVndk() && ctx.useVndk() {
-		s.Cfi = nil
-		s.Diag.Cfi = nil
-	}
-
 	if ctx.inRamdisk() || ctx.inVendorRamdisk() || ctx.inRecovery() {
 		// HWASan ramdisk (which is built from recovery) goes over some bootloader limit.
 		// Keep libc instrumented so that ramdisk / vendor_ramdisk / recovery can run hwasan-instrumented code if necessary.