Fixed emails not being sent by removing duplicate mail header

Removing the MIME header (which was also being inserted
automatically by the mailing system) means emails are now being
sent.

inc/mail.php

@@ -14,14 +14,8 @@ class visitors_edits_EMAIL{
 			"notify_admin"=>null
 		]);
 
-		$headers= "MIME-Version: 1.0\r\n";
-		$headers .= "Content-Type: text/html; charset=UTF-8\r\n";
-
-		wp_mail($destination, $this->subject, $this->body,$headers);
-		/*
-		subject : $this->subject
-		body : $this->body
-		*/
+		$headers = "Content-Type: text/html; charset=UTF-8\r\n";
+		wp_mail($destination, $this->subject, $this->body, $headers);
 	}
 	private function loadTemplate($template){
 		ob_start();