Revert "make t/util/test-runner runnable"

This reverts commit 5d88d3865e72b9a785e2cde93e3ec5b14c298ee3.
disable compilation server by default

	* bin/jsx is always a node.js script
	* bin/jsx-with-server is the perl wrapper that spawns the server
	* t/util/test-runner spawns bin/jsx
Merge branch 'kazuho/experiments/compilation-server-nomore-default'