PluginManager: Remove useless deprecation warning message

this message just confuses end users and is of little use to a developer. It doesn't make any sense to make a special case for events when we have lots of other deprecated things to think about anyway which won't be shown warnings for.

src/pocketmine/plugin/PluginManager.php

@@ -792,16 +792,6 @@ class PluginManager{
 			throw new PluginException($event . " is not an Event");
 		}
 
-		$tags = Utils::parseDocComment((string) (new \ReflectionClass($event))->getDocComment());
-		if(isset($tags["deprecated"]) and $this->server->getProperty("settings.deprecated-verbose", true)){
-			$this->server->getLogger()->warning($this->server->getLanguage()->translateString("pocketmine.plugin.deprecatedEvent", [
-				$plugin->getName(),
-				$event,
-				get_class($listener) . "->" . ($executor instanceof MethodEventExecutor ? $executor->getMethod() : "<unknown>")
-			]));
-		}
-
-
 		if(!$plugin->isEnabled()){
 			throw new PluginException("Plugin attempted to register " . $event . " while not enabled");
 		}

src/pocketmine/resources/pocketmine.yml

@@ -9,8 +9,6 @@ settings:
   shutdown-message: "Server closed"
   #Allow listing plugins via Query
   query-plugins: true
-  #Show a console message when a plugin uses deprecated API methods
-  deprecated-verbose: true
   #Enable plugin and core profiling by default
   enable-profiling: false
   #Will only add results when tick measurement is below or equal to given value (default 20)