src: remove outdated FIXME in node_crypto.cc

Issue 4641 contains a FIXME regarding the InitCrypto function. After
discussing this with bnoordhuis it seems to be an outdated comment.

Refs: https://github.com/nodejs/node/issues/4641
PR-URL: https://github.com/nodejs/node/pull/11669
Reviewed-By: Gibson Fahnestock <gibfahn@gmail.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

src/node_crypto.cc

@@ -5999,7 +5999,6 @@ void SetFipsCrypto(const FunctionCallbackInfo<Value>& args) {
 #endif /* NODE_FIPS_MODE */
 }
 
-// FIXME(bnoordhuis) Handle global init correctly.
 void InitCrypto(Local<Object> target,
                 Local<Value> unused,
                 Local<Context> context,