Use fast-syntax-highlighting

Replace zsh-syntax-highlighting plugin with the improved
fast-syntax-highlighting, faster and more accurate.

zshrc

@@ -27,9 +27,6 @@ source-plugin autoenv
 # Build system helper commands
 source-plugin build
 
-# Disable non end-of-line autosuggest accept widgets
-ZSH_AUTOSUGGEST_ACCEPT_WIDGETS=(end-of-line vi-end-of-line)
-
 # Remove duplicates from history
 setopt hist_ignore_all_dups
 setopt hist_reduce_blanks