Revert "Use custom script to simulate “codesign --deep”"

This reverts commit 434917b1e9.

bin/gen_build

@@ -909,7 +909,7 @@ rule run_application
   description = Run ‘$in’…
 
 rule sign_executable
-  command = bin/sign_app "$identity" $in && touch $out
+  command = codesign --deep -fs "$identity" $in && touch $out
   description = Sign ‘$in’…
 
 rule tbz_archive

bin/sign_app

@@ -1,12 +0,0 @@
-#!/bin/bash
-
-identity=$1
-app_path=$2
-
-until codesign -fs "${identity}" "${app_path}"; do
-	for lib in "${app_path}"/Contents/{Frameworks/*.{framework,dylib},PlugIns/*.tmplugin}; do
-		codesign --timestamp=none -s "${identity}" "${lib}"
-	done
-done
-
-true