Remove perf_hooks Node 12 comment

We don't need the import for Node 12 compat, but we do need it to make
the file compile.

src/analyze-action.ts

@@ -1,6 +1,5 @@
 import * as fs from "fs";
 import path from "path";
-// We need to import `performance` on Node 12
 import { performance } from "perf_hooks";
 
 import * as core from "@actions/core";

src/analyze.ts

@@ -1,6 +1,6 @@
 import * as fs from "fs";
 import * as path from "path";
-import { performance } from "perf_hooks"; // We need to import `performance` on Node 12
+import { performance } from "perf_hooks";
 
 import * as toolrunner from "@actions/exec/lib/toolrunner";
 import del from "del";

src/config-utils.ts

@@ -1,6 +1,5 @@
 import * as fs from "fs";
 import * as path from "path";
-// We need to import `performance` on Node 12
 import { performance } from "perf_hooks";
 
 import * as yaml from "js-yaml";