Skip mule-core 4.9.1 due to missing mule-artifact-ast:1.5.1 dependency (also removed redundant muzzle block) (#8415)

Author: mcculls

dd-java-agent/instrumentation/mule-4/build.gradle

@@ -15,6 +15,7 @@ muzzle {
     group = 'org.mule.runtime'
     module = 'mule-core'
     versions = "[$muleVersion,)"
+    skipVersions = ['4.9.1'] // missing transitive dependency
     javaVersion = "17"
     excludeDependency 'om.google.guava:guava'
     excludeDependency 'com.google.code.findbugs:jsr305'
@@ -24,21 +25,12 @@ muzzle {
     group = 'org.mule.runtime'
     module = 'mule-tracer-customization-impl'
     versions = "[$muleVersion,)"
+    skipVersions = ['4.9.1'] // missing transitive dependency
     javaVersion = "17"
     excludeDependency 'om.google.guava:guava'
     excludeDependency 'com.google.code.findbugs:jsr305'
     additionalDependencies +="org.mule.runtime:mule-core:$muleVersion"
   }
-  pass {
-    name = 'before-4.5.0'
-    group = 'org.mule.runtime'
-    module = 'mule-core'
-    versions = "[$muleVersion,)"
-    javaVersion = "17"
-    excludeDependency 'om.google.guava:guava'
-    excludeDependency 'com.google.code.findbugs:jsr305'
-    additionalDependencies +="org.mule.runtime:mule-tracer-customization-impl:$muleVersion"
-  }
 
   fail {
     name = 'before-4.5.0'