Fix bright colors

Remove old code that set bright colors equal to normal colors. This code
was ancient and led to bright colors being unusable. The code originates
from 0e37d8ef86.

functions/colors.zsh

@@ -323,12 +323,6 @@ function foregroundColor() {
 function getColorCode() {
   # Check if given value is already numerical
   if [[ "$1" = <-> ]]; then
-    # ANSI color codes distinguish between "foreground"
-    # and "background" colors. We don't need to do that,
-    # as ZSH uses a 256 color space anyway.
-    if [[ "$1" = <8-15> ]]; then
-      echo -n $(($1 - 8))
-    else
       echo -n "$1"
     fi
   else