Remove un-needed "-netspeed full" and "-netdelay none".

This patch removes the use of "-netspeed full" and "-netdelay none"
when starting a core, since these values correspond to the default.

Usually, these were triggered by the values found in the skin files.

Change-Id: I88944c6736dc721a8645b1c7d87bc0cb949feec4
diff --git a/android/main-common.h b/android/main-common.h
index c26b9b9..a74bf52 100644
--- a/android/main-common.h
+++ b/android/main-common.h
@@ -37,6 +37,9 @@
 void parse_keyset(const char*  keyset, AndroidOptions*  opts);
 void write_default_keyset( void );
 
+#define NETWORK_SPEED_DEFAULT  "full"
+#define NETWORK_DELAY_DEFAULT  "none"
+
 extern const char*  skin_network_speed;
 extern const char*  skin_network_delay;