refactor(ivy): ngcc - remove the targetPath properties of Transformer and Renderer (#29556)

We have already removed this concept from the public API. This just cleans it out altogether.

The `targetPath` was an alternative output path to the original `basePath`.
This is not really a very useful concept, since the actual target path
of each output file is more complex and not consistently relative to the `basePath`.

PR Close #29556

packages/compiler-cli/ngcc/src/rendering/esm5_renderer.ts

@@ -15,9 +15,8 @@ import {EntryPointBundle} from '../packages/entry_point_bundle';
 
 export class Esm5Renderer extends EsmRenderer {
   constructor(
-      host: NgccReflectionHost, isCore: boolean, bundle: EntryPointBundle, sourcePath: string,
-      targetPath: string) {
-    super(host, isCore, bundle, sourcePath, targetPath);
+      host: NgccReflectionHost, isCore: boolean, bundle: EntryPointBundle, sourcePath: string) {
+    super(host, isCore, bundle, sourcePath);
   }
 
   /**