[zsh] Remove unnecessary evals

shell/completion.zsh

@@ -145,7 +145,7 @@ fzf-completion() {
   # http://zsh.sourceforge.net/Doc/Release/Expansion.html#Parameter-Expansion-Flags
   tokens=(${(z)LBUFFER})
   if [ ${#tokens} -lt 1 ]; then
-    eval "zle ${fzf_default_completion:-expand-or-complete}"
+    zle ${fzf_default_completion:-expand-or-complete}
     return
   fi
 
@@ -180,7 +180,7 @@ fzf-completion() {
     fi
   # Fall back to default completion
   else
-    eval "zle ${fzf_default_completion:-expand-or-complete}"
+    zle ${fzf_default_completion:-expand-or-complete}
   fi
 }