removed PHP7 typehints

Author: jkuchar

MailLibrary/MimePart.php

@@ -41,31 +41,31 @@ public function __construct(IDriver $driver, $mailId, $partId, $mimeType, $name,
 	/**
 	 * @return string
 	 */
-	public function getPartId(): string
+	public function getPartId()
 	{
 		return $this->partId;
 	}
 
 	/**
 	 * @return string
 	 */
-	public function getMimeType(): string
+	public function getMimeType()
 	{
 		return $this->mimeType;
 	}
 
 	/**
 	 * @return string
 	 */
-	public function getName(): string
+	public function getName()
 	{
 		return $this->name;
 	}
 
 	/**
 	 * @return string
 	 */
-	public function getEncoding(): string
+	public function getEncoding()
 	{
 		return $this->encoding;
 	}