Revert "Build system changes for CFI (Soong)"

This reverts commit d4b484b070.

Rationale: second in group of commits that left aosp_x86_64 not
building. (See https://android-build.googleplex.com/builds/
submitted/4426589/aosp_x86_64-eng/latest/logs/build_error.log)

Bug: 30227045
Test: builds
Change-Id: I38ab5284c614d6ee68e7359219bd75c7d50131be

cc/androidmk.go

@@ -86,11 +86,6 @@ func (c *Module) AndroidMk() android.AndroidMkData {
 	c.subAndroidMk(&ret, c.linker)
 	if c.sanitize != nil {
 		c.subAndroidMk(&ret, c.sanitize)
-		if Bool(c.sanitize.Properties.Sanitize.Cfi) {
-			ret.SubName += ".cfi"
-		} else if Bool(c.sanitize.Properties.Sanitize.Address) {
-			ret.SubName += ".asan"
-		}
 	}
 	c.subAndroidMk(&ret, c.installer)