Remove file deletion in after block

Author: angelapwen

extensions/ql-vscode/src/vscode-tests/no-workspace/query-results.test.ts

@@ -179,7 +179,6 @@ describe('query-results', () => {
 
     afterEach(async () => {
       sandbox.restore();
-      await safeDel(interpretedResultsPath);
     });
 
     it('should interpretResultsSarif', async function() {
@@ -495,12 +494,4 @@ describe('query-results', () => {
     }
     return fqi;
   }
-
-  function safeDel(file: string) {
-    try {
-      fs.unlinkSync(file);
-    } catch (e) {
-      // ignore
-    }
-  }
 });