Remove deprecated (and unused) resteasy-mutiny extension.

Change-Id: Icea48dc0a26b5458dd1cfc9394ea47d881730485
diff --git a/pom.xml b/pom.xml
index b4ed900..bacda3e 100644
--- a/pom.xml
+++ b/pom.xml
@@ -173,10 +173,6 @@
     </dependency>
     <dependency>
       <groupId>io.quarkus</groupId>
-      <artifactId>quarkus-resteasy-mutiny</artifactId>
-    </dependency>
-    <dependency>
-      <groupId>io.quarkus</groupId>
       <artifactId>quarkus-resteasy-qute</artifactId>
     </dependency>
     <dependency>