Ascii: Remove travis art as it's no longer used

ascii/distro/travis

-${c1} _______        _
-${c2}|__   __|      | |
-${c3}   | | ___  ___| |_
-${c4}   | |/ _ \/ __| __|
-${c5}   | |  __/\__ \ |_
-${c6}   |_|\___||___/\__|

neofetch

@@ -2933,11 +2933,6 @@ get_distro_colors() {
             ascii_file="tails"
         ;;
 
-        "Travis")
-            set_colors 1 2 3 4 5 6
-            ascii_file="travis"
-        ;;
-
         "Trisquel"*)
             set_colors 4 6
             ascii_file="trisquel"