diff --git a/src/plugin/PluginBase.php b/src/plugin/PluginBase.php
index 569a122f8..6a6bf18a3 100644
--- a/src/plugin/PluginBase.php
+++ b/src/plugin/PluginBase.php
@@ -30,7 +30,6 @@ use pocketmine\command\PluginCommand;
 use pocketmine\lang\KnownTranslationFactory;
 use pocketmine\scheduler\TaskScheduler;
 use pocketmine\Server;
-use pocketmine\utils\AssumptionFailedError;
 use pocketmine\utils\Config;
 use pocketmine\utils\Utils;
 use Symfony\Component\Filesystem\Path;
@@ -231,26 +230,6 @@ abstract class PluginBase implements Plugin, CommandExecutor{
 		return Path::join($this->getResourceFolder(), $filename);
 	}
 
-	/**
-	 * @deprecated Prefer using standard PHP functions with {@link PluginBase::getResourcePath()}, like
-	 * file_get_contents() or fopen().
-	 *
-	 * Gets an embedded resource on the plugin file.
-	 * WARNING: You must close the resource given using fclose()
-	 *
-	 * @return null|resource Resource data, or null
-	 */
-	public function getResource(string $filename){
-		$filename = rtrim(str_replace(DIRECTORY_SEPARATOR, "/", $filename), "/");
-		if(file_exists($this->resourceFolder . $filename)){
-			$resource = fopen($this->resourceFolder . $filename, "rb");
-			if($resource === false) throw new AssumptionFailedError("fopen() should not fail on a file which exists");
-			return $resource;
-		}
-
-		return null;
-	}
-
 	/**
 	 * Saves an embedded resource to its relative location in the data folder
 	 */
diff --git a/src/scheduler/AsyncTask.php b/src/scheduler/AsyncTask.php
index ba5cc424c..55d8358e4 100644
--- a/src/scheduler/AsyncTask.php
+++ b/src/scheduler/AsyncTask.php
@@ -87,13 +87,6 @@ abstract class AsyncTask extends Runnable{
 		$worker->getNotifier()->wakeupSleeper();
 	}
 
-	/**
-	 * @deprecated
-	 */
-	public function isCrashed() : bool{
-		return $this->isTerminated();
-	}
-
 	/**
 	 * Returns whether this task has finished executing, whether successfully or not. This differs from isRunning()
 	 * because it is not true prior to task execution.
@@ -120,20 +113,6 @@ abstract class AsyncTask extends Runnable{
 		$this->result = is_scalar($result) || is_null($result) || $result instanceof ThreadSafe ? $result : new NonThreadSafeValue($result);
 	}
 
-	/**
-	 * @deprecated
-	 */
-	public function cancelRun() : void{
-		//NOOP
-	}
-
-	/**
-	 * @deprecated
-	 */
-	public function hasCancelledRun() : bool{
-		return false;
-	}
-
 	public function setSubmitted() : void{
 		$this->submitted = true;
 	}
@@ -193,13 +172,6 @@ abstract class AsyncTask extends Runnable{
 
 	}
 
-	/**
-	 * @deprecated No longer used
-	 */
-	public function onError() : void{
-
-	}
-
 	/**
 	 * Saves mixed data in thread-local storage. Data stored using this storage is **only accessible from the thread it
 	 * was stored on**. Data stored using this method will **not** be serialized.