Removed unused variables and imports.
Removed unused variables and imports.

--- a/src/com/dryerzinia/aprs_x/test/DeviceControlActivity.java
+++ b/src/com/dryerzinia/aprs_x/test/DeviceControlActivity.java
@@ -32,7 +32,6 @@
 import android.graphics.Color;
 import android.graphics.PorterDuff.Mode;
 import android.os.Bundle;
-import android.os.Environment;
 import android.os.IBinder;
 import android.util.Log;
 import android.view.LayoutInflater;
@@ -45,10 +44,6 @@
 import android.widget.ProgressBar;
 import android.widget.TextView;
 
-import java.io.FileNotFoundException;
-import java.io.FileOutputStream;
-import java.io.IOException;
-import java.io.OutputStream;
 import java.util.List;
 import java.util.UUID;
 
@@ -273,16 +268,6 @@
         });
     }
 
-    private void displayData(String data) {
-        if (data != null) {
-
-        	Log.d(TAG, "Disp: " + data);
-
-        	//mPacketList.add(data);
-        	//mPacketListArrayAdapter.notifyDataSetChanged();
-        }
-    }
-
     private static IntentFilter makeGattUpdateIntentFilter() {
         final IntentFilter intentFilter = new IntentFilter();
         intentFilter.addAction(BLETNCService.ACTION_GATT_CONNECTED);