refactor(@angular-devkit/build-angular): remove unused findUp method

Author: alan-agius4

packages/angular_devkit/build_angular/src/utils/find-up.ts

@@ -9,34 +9,6 @@ import { existsSync } from 'fs';
 import * as path from 'path';
 import { isDirectory } from './is-directory';
 
-export function findUp(names: string | string[], from: string, stopOnNodeModules = false): string | null {
-  if (!Array.isArray(names)) {
-    names = [names];
-  }
-  const root = path.parse(from).root;
-
-  let currentDir = from;
-  while (currentDir && currentDir !== root) {
-    for (const name of names) {
-      const p = path.join(currentDir, name);
-      if (existsSync(p)) {
-        return p;
-      }
-    }
-
-    if (stopOnNodeModules) {
-      const nodeModuleP = path.join(currentDir, 'node_modules');
-      if (existsSync(nodeModuleP)) {
-        return null;
-      }
-    }
-
-    currentDir = path.dirname(currentDir);
-  }
-
-  return null;
-}
-
 export function findAllNodeModules(from: string, root?: string): string[] {
   const nodeModules: string[] = [];