kill Object#` monkey patch

activesupport/lib/active_support/core_ext/kernel.rb

 require 'active_support/core_ext/kernel/daemonizing'
 require 'active_support/core_ext/kernel/reporting'
-require 'active_support/core_ext/kernel/agnostics'
 require 'active_support/core_ext/kernel/requires'
 require 'active_support/core_ext/kernel/debugger'

activesupport/lib/active_support/core_ext/kernel/agnostics.rb

-class Object
-  # Makes backticks behave (somewhat more) similarly on all platforms.
-  # On win32 `nonexistent_command` raises Errno::ENOENT; on Unix, the
-  # spawned shell prints a message to stderr and sets $?.  We emulate
-  # Unix on the former but not the latter.
-  def `(command) #:nodoc:
-    super
-  rescue Errno::ENOENT => e
-    STDERR.puts "#$0: #{e}"
-  end
-end
\ No newline at end of file