remove non needed noisy debug log

git-svn-id: https://svn.apache.org/repos/asf/maven/plugin-tools/trunk@1343170 13f79535-47bb-0310-9956-ffa450edef68

maven-plugin-tools-annotations/src/main/java/org/apache/maven/tools/plugin/annotations/scanner/visitors/MojoAnnotationVisitor.java

@@ -75,7 +75,7 @@ public class MojoAnnotationVisitor
 
     public void visitEnd()
     {
-        logger.debug( "MojoAnnotationVisitor#visitEnd" );
+        // no op
     }
 
     public String getAnnotationClassName()

maven-plugin-tools-annotations/src/main/java/org/apache/maven/tools/plugin/annotations/scanner/visitors/MojoClassVisitor.java

@@ -139,23 +139,27 @@ public class MojoClassVisitor
 
     public void visitAttribute( Attribute attr )
     {
+        // no op
     }
 
     public void visitSource( String source, String debug )
     {
+        // no op
     }
 
     public void visitOuterClass( String owner, String name, String desc )
     {
+        // no op
     }
 
     public void visitInnerClass( String name, String outerName, String innerName, int access )
     {
+        // no op
     }
 
     public void visitEnd()
     {
-        logger.debug( "MojoClassVisitor#visitEnd" );
+        // no op
     }
 
 }

maven-plugin-tools-annotations/src/main/java/org/apache/maven/tools/plugin/annotations/scanner/visitors/MojoFieldVisitor.java

@@ -72,12 +72,12 @@ public class MojoFieldVisitor
 
     public void visitAttribute( Attribute attribute )
     {
-        logger.debug( "MojoFieldVisitor#visitAttribute" );
+        // no op
     }
 
     public void visitEnd()
     {
-        logger.debug( "MojoFieldVisitor#visitEnd" );
+        // no op
     }
 
     public String getClassName()