coment out a debug line

OpenSim/Region/OptionalModules/Materials/MaterialsModule.cs

@@ -359,7 +359,7 @@ namespace OpenSim.Region.OptionalModules.Materials
 
                 byte[] data = matAsset.Data;
 
-                string txt = System.Text.Encoding.ASCII.GetString(data);
+                // string txt = System.Text.Encoding.ASCII.GetString(data);
                 try
                 {
                     mat = (OSDMap)OSDParser.DeserializeLLSDXml(data);

opensim/Region/Framework/Interfaces/IMaterialsModule.cs

@@ -25,7 +25,6 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-using System;
 using OpenSim.Region.Framework.Scenes;
 using OpenMetaverse;