Cleans up phing plugin.

plugins/phing/phing.plugin.zsh

-_phing_does_target_list_need_generating () {
-  [ ! -f .phing_targets ] && return 0;
-  [ build.xml -nt .phing_targets ] && return 0;
-  return 1;
-}
-
 _phing () {
   if [ -f build.xml ]; then
-    if _phing_does_target_list_need_generating; then
-      phing -l|grep -v "\[property\]"|grep -v "Buildfile"|sed 1d|grep -v ":$" |grep -v "^\-*$"|awk '{print $1}' > .phing_targets
-    fi
-    compadd `cat .phing_targets`
+    compadd $(phing -l|grep -v "\[property\]"|grep -v "Buildfile"|sed 1d|grep -v ":$" |grep -v "^\-*$"|awk '{print $1}')
   fi
 }