Remove because reasons, because reasons

Was funny back then but maybe it's not anymore. Also it doesn't really indicate that the message could be changed.

src/DisallowedAttribute.php

@@ -67,9 +67,9 @@ public function getExcludes(): array
 	}
 
 
-	public function getMessage(): string
+	public function getMessage(): ?string
 	{
-		return $this->message ?? 'because reasons';
+		return $this->message;
 	}
 
 

src/DisallowedCall.php

@@ -82,9 +82,9 @@ public function getDefinedIn(): array
 	}
 
 
-	public function getMessage(): string
+	public function getMessage(): ?string
 	{
-		return $this->message ?? 'because reasons';
+		return $this->message;
 	}
 
 

src/DisallowedConstant.php

@@ -58,9 +58,9 @@ public function getConstant(): string
 	}
 
 
-	public function getMessage(): string
+	public function getMessage(): ?string
 	{
-		return $this->message ?? 'because reasons';
+		return $this->message;
 	}
 
 

src/DisallowedNamespace.php

@@ -73,9 +73,9 @@ public function getExcludes(): array
 	}
 
 
-	public function getMessage(): string
+	public function getMessage(): ?string
 	{
-		return $this->message ?? 'because reasons';
+		return $this->message;
 	}