delete prompt_icons_test

internal/p10k.zsh

@@ -1569,18 +1569,6 @@ prompt_detect_virt() {
   fi
 }
 
-################################################################
-# Test icons
-prompt_icons_test() {
-  for key in ${(@k)icons}; do
-    # The lower color spectrum in ZSH makes big steps. Choosing
-    # the next color has enough contrast to read.
-    local random_color=$((RANDOM % 8))
-    local next_color=$((random_color+1))
-    "$1_prompt_segment" "$0" "$2" "$random_color" "$next_color" "$key" 0 '' "$key"
-  done
-}
-
 ################################################################
 # Segment to display the current IP address
 prompt_ip() {