Drop the custom load error message in exe/rspec.

There's little need for it nowadays, and it can hide the true error.

Author: benhoskings

exe/rspec

@@ -1,26 +1,4 @@
 #!/usr/bin/env ruby
 
-begin
-  require 'rspec/core'
-  RSpec::Core::Runner.invoke
-rescue LoadError
-  $stderr.puts <<-EOS
-#{'*'*50}
-  Could not find 'rspec/core'
-
-  This may happen if you're using rubygems as your package manager, but it is not
-  being required through some mechanism before executing the rspec command.
-
-  You may need to do one of the following in your shell:
-
-    # for bash/zsh
-    export RUBYOPT=rubygems
-
-    # for csh, etc.
-    set RUBYOPT=rubygems
-
-  For background, please see http://gist.github.com/54177.
-#{'*'*50}
-  EOS
-  exit(1)
-end
+require 'rspec/core'
+RSpec::Core::Runner.invoke