refactor: use killProcess from @netlify/dev-utils (#7472)

* Correct import groupings

* refactor: remove unused process.ts file

Author: keanu-a

tests/integration/commands/functions-serve/functions-serve.test.ts

@@ -1,3 +1,4 @@
+import { killProcess } from '@netlify/dev-utils'
 import js from 'dedent'
 import execa from 'execa'
 import getPort from 'get-port'
@@ -6,7 +7,6 @@ import { describe, test } from 'vitest'
 import waitPort from 'wait-port'
 
 import { cliPath } from '../../utils/cli-path.js'
-import { killProcess } from '../../utils/process.js'
 import { type SiteBuilder, withSiteBuilder } from '../../utils/site-builder.js'
 import { InvokeFunctionResult } from '../../../../src/lib/functions/runtimes/index.js'
 

tests/integration/utils/dev-server.ts

@@ -1,13 +1,13 @@
 import path from 'node:path'
 import process from 'node:process'
 
+import { killProcess } from '@netlify/dev-utils'
 import execa from 'execa'
 import getPort from 'get-port'
 import pTimeout from 'p-timeout'
 
 import { cliPath } from './cli-path.js'
 import { handleQuestions } from './handle-questions.js'
-import { killProcess } from './process.js'
 
 export const getExecaOptions = ({ cwd, env }: { cwd: string; env: NodeJS.ProcessEnv }) => {
   // Unused vars here are in order to omit LANg and LC_ALL from envs