Remove duplicate code

Seems to be a refactoring leftover of some kind as on lines 146-148
these calls are done again…

main.go

@@ -101,10 +101,6 @@ func wrappedMain() int {
 	// Make sure we clean up any managed plugins at the end of this
 	defer plugin.CleanupClients()
 
-	// Initialize the TFConfig settings for the commands...
-	ContextOpts.Providers = config.ProviderFactories()
-	ContextOpts.Provisioners = config.ProvisionerFactories()
-
 	// Get the command line args. We shortcut "--version" and "-v" to
 	// just show the version.
 	args := os.Args[1:]