Remove execute permission and shebangs

The appropriate ruby interpreter is determined by the config_version.sh
shell script which explicitely use it to start these ruby scripts.
Removing the execute bit ensure users will not run these script with the
wrong Ruby version.

scripts/code_manager_config_version.rb

@@ -1,4 +1,3 @@
-#!/opt/puppetlabs/puppet/bin/ruby
 require 'json'
 require 'socket'
 

scripts/config_version.rb

@@ -1,4 +1,3 @@
-#!/opt/puppetlabs/puppet/bin/ruby
 begin
   require 'rugged'
   require 'socket'