remove request* and event* functions

rationale:
* it's just boilerplate, as these just fill out the structs. can also be done at call site
* they are usually only called at one place
* it would lead to many includes (or at least forward defs) in sscsm_controller.h and
  sscsm_environment.h

src/client/client.cpp

@@ -541,7 +541,11 @@ void Client::step(float dtime)
 	*/
 	LocalPlayer *player = m_env.getLocalPlayer();
 
-	m_sscsm_controller->eventOnStep(this, dtime);
+	{
+		auto event = std::make_unique<SSCSMEventOnStep>();
+		event->dtime = dtime;
+		m_sscsm_controller->runEvent(this, std::move(event));
+	}
 
 	// Step environment (also handles player controls)
 	m_env.step(dtime);

src/script/sscsm/sscsm_controller.cpp

@@ -60,10 +60,3 @@ void SSCSMController::runEvent(Client *client, std::unique_ptr<ISSCSMEvent> even
 		answer = handleRequest(client, request.get());
 	}
 }
-
-void SSCSMController::eventOnStep(Client *client, f32 dtime)
-{
-	auto event = std::make_unique<SSCSMEventOnStep>();
-	event->dtime = dtime;
-	runEvent(client, std::move(event));
-}

src/script/sscsm/sscsm_controller.h

@@ -32,6 +32,4 @@ public:
 
 	// Handles requests until the next event is polled
 	void runEvent(Client *client, std::unique_ptr<ISSCSMEvent> event);
-
-	void eventOnStep(Client *client, f32 dtime);
 };

src/script/sscsm/sscsm_environment.cpp

@@ -22,7 +22,11 @@ SSCSMEnvironment::~SSCSMEnvironment() = default;
 void *SSCSMEnvironment::run()
 {
 	while (true) {
-		auto next_event = requestPollNextEvent();
+		auto next_event = [&]{
+			auto request = SSCSMRequestPollNextEvent{};
+			auto answer = doRequest(std::move(request));
+			return std::move(answer.next_event);
+		}();
 
 		if (dynamic_cast<SSCSMEventTearDown *>(next_event.get())) {
 			break;
@@ -67,18 +71,3 @@ void SSCSMEnvironment::setFatalError(const std::string &reason)
 	request.reason = reason;
 	doRequest(std::move(request));
 }
-
-std::unique_ptr<ISSCSMEvent> SSCSMEnvironment::requestPollNextEvent()
-{
-	auto request = SSCSMRequestPollNextEvent{};
-	auto answer = doRequest(std::move(request));
-	return std::move(answer.next_event);
-}
-
-MapNode SSCSMEnvironment::requestGetNode(v3s16 pos)
-{
-	auto request = SSCSMRequestGetNode{};
-	request.pos = pos;
-	auto answer = doRequest(std::move(request));
-	return answer.node;
-}

src/script/sscsm/sscsm_environment.h

@@ -50,7 +50,4 @@ public:
 				exchange(serializeSSCSMRequest(std::forward<RQ>(rq)))
 			);
 	}
-
-	std::unique_ptr<ISSCSMEvent> requestPollNextEvent();
-	MapNode requestGetNode(v3s16 pos);
 };