fix: prefer getMultilineInput and getBooleanInput from actions/core

src/utils.ts

@@ -2,20 +2,6 @@ import * as core from '@actions/core'
 import * as fs from 'fs'
 import * as path from 'path'
 
-export function getInputAsArray(
-  name: string,
-  options?: core.InputOptions
-): string[] {
-  return getStringAsArray(core.getInput(name, options))
-}
-
-export function getStringAsArray(str: string): string[] {
-  return str
-    .split(/[\n,]+/)
-    .map(s => s.trim())
-    .filter(x => x !== '')
-}
-
 export function getRepoPath(relativePath?: string): string {
   let githubWorkspacePath = process.env['GITHUB_WORKSPACE']
   if (!githubWorkspacePath) {