diff --git a/src/test/restart.test.ts b/src/test/restart.test.ts
deleted file mode 100644
index e0262baa..00000000
--- a/src/test/restart.test.ts
+++ /dev/null
@@ -1,24 +0,0 @@
-import * as vscode from 'vscode'
-
-import { getDocUri, sleep, testDiagnostics, testAndRetry } from './utils'
-import { EXPECTED_NON_EMPTY_DIAGNOSTICS } from './diagnostics.test'
-
-suite('ast-grep.restartLanguageServer should work', () => {
-  const docUri = getDocUri('test.ts')
-  const sgConfigYml = getDocUri('sgconfig.yml')
-  const tempSgConfigYml = getDocUri('_sgconfig.yml')
-
-  testAndRetry('Delete or create the sgconfig.yml', async () => {
-    // remove configFile should receive no diagnostics
-    await vscode.workspace.fs.rename(sgConfigYml, tempSgConfigYml)
-    await vscode.commands.executeCommand('ast-grep.restartLanguageServer')
-    await sleep(1000)
-    await testDiagnostics(docUri, [])
-
-    // should receive diagnostics after add configFile
-    await vscode.workspace.fs.rename(tempSgConfigYml, sgConfigYml)
-    await vscode.commands.executeCommand('ast-grep.restartLanguageServer')
-    await sleep(1000)
-    await testDiagnostics(docUri, EXPECTED_NON_EMPTY_DIAGNOSTICS)
-  })
-})