Remove deprecated ToMakePath calls

ToMakePath is a noop now, remove the calls to it.

Bug: 204136549
Test: m checkbuild
Change-Id: Ib156846de395c37884b52f01ab10d05596296d00
diff --git a/build/art.go b/build/art.go
index a6cd944..01cb44a 100644
--- a/build/art.go
+++ b/build/art.go
@@ -288,7 +288,7 @@
 	defer artTestMutex.Unlock()
 
 	tests := testMap[name]
-	tests = append(tests, ctx.Path().ToMakePath().String())
+	tests = append(tests, ctx.Path().String())
 	testMap[name] = tests
 }
 
@@ -315,7 +315,7 @@
 	defer artTestMutex.Unlock()
 
 	src := ctx.SrcPath().String()
-	path := strings.Split(ctx.Path().ToMakePath().String(), "/")
+	path := strings.Split(ctx.Path().String(), "/")
 	// Keep last two parts of the install path (e.g. bin/dex2oat).
 	dst := strings.Join(path[len(path)-2:], "/")
 	if oldSrc, ok := testcasesContent[dst]; ok {