src: remove outdated FIXME in node_crypto.cc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discussing this with bnoordhuis it seems to be an outdated comment.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: #4641
PR-URL: #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

@@ -5998,7 +5998,6 @@ 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,