* src/common/nmv-env.cc (build_path_to_help_file): Remove definition.
	* src/common/nmv-env.h (build_path_to_help_file): Remove
	declaration.
	* src/workbench/nmv-workbench.cc
	(Workbench::on_contents_menu_item_action): Use gtk_show_uri
	instead of the previously convoluted env::build_path_to_help_file.
	* tests/Makefile.am: Don't run untestenv that was testing
	env:build_path_to_help_file.
	* tests/test-env.cc (test_build_path_to_help_file): Remove.
	(init_unit_test_suite): Comment the juice out of this, waiting for
	more env tests to come.