Added a color code to the memory card. (#3609)

Can be used to encode the stored content as a 4x2 grid of AEColors
Currently used to indicate the P2P frequency.

src/main/java/appeng/util/helpers/P2PHelper.java

@@ -21,8 +21,6 @@ package appeng.util.helpers;
 
 import com.google.common.base.Preconditions;
 
-import net.minecraft.util.text.TextFormatting;
-
 import appeng.api.util.AEColor;
 
 
@@ -69,22 +67,4 @@ public class P2PHelper
 		return String.format( "%04X", frequency );
 	}
 
-	public String toColorHexDigit( AEColor color )
-	{
-		return TextFormatting.fromColorIndex( color.ordinal() ) + this.toHexDigit( color );
-	}
-
-	public String toColorHexString( short frequency )
-	{
-		final AEColor[] colors = toColors( frequency );
-		final StringBuilder builder = new StringBuilder();
-
-		for( AEColor aeColor : colors )
-		{
-			builder.append( this.toColorHexDigit( aeColor ) );
-		}
-
-		return builder.toString();
-	}
-
 }