Remove duplicate definition of Push (microsoft#35397)

It's also defined in `corePublic.ts` - there's no errors because they're (almost) identical and merge (creating a redundant overload for `push`). Ironically, while this definition was internal, the other is public (and more complete).

Author: weswigham

src/compiler/moduleNameResolver.ts

@@ -10,12 +10,6 @@ namespace ts {
         return !!compilerOptions.traceResolution && host.trace !== undefined;
     }
 
-    /** Array that is only intended to be pushed to, never read. */
-    /* @internal */
-    export interface Push<T> {
-        push(value: T): void;
-    }
-
     function withPackageId(packageInfo: PackageJsonInfo | undefined, r: PathAndExtension | undefined): Resolved | undefined {
         let packageId: PackageId | undefined;
         if (r && packageInfo) {