runtime: remove ctx param from stub code

This was necessary before, when only some functions had a context
parameter. Now this is not necessary anymore because all functions
(independent of signature) have a context paramter at the end so the
signature always automatically matches.

src/runtime/poll.go

@@ -3,7 +3,7 @@ package runtime
 // This file implements stub functions for internal/poll.
 
 //go:linkname poll_runtime_pollServerInit internal/poll.runtime_pollServerInit
-func poll_runtime_pollServerInit(ctx *uint8) {
+func poll_runtime_pollServerInit() {
 	panic("todo: runtime_pollServerInit")
 }