remove unneeded ressource

Signed-off-by: tobiasKaminsky <tobias@kaminsky.me>

src/main/res/values/colors.xml

@@ -28,7 +28,6 @@
     <color name="text_color_inverse">#ffffff</color>
     <color name="disabled_text">#ff888888</color>
     <color name="list_divider_background">#eee</color>
-    <color name="fg_default">#000000</color>
     <color name="fg_contrast">#656565</color>
     <color name="fg_inverse">#FFFFFF</color>
     <color name="filelist_icon_background">#DDDDDD</color>