@SuppressWarnings("unused")
	@Transactional
	public void deleteTag(User user, Tag tag) {
		for (PerfTest each : tag.getPerfTests()) {
			each.getTags().remove(tag);
		}
		perfTestRepository.saveAll(tag.getPerfTests());
		tagRepository.delete(tag);
	}
Delete a tag.

@param user	user
@param tag	tag
ngrinder-controller/src/main/java/org/ngrinder/perftest/service/TagService.java