Remove escape sequence handling in JRuby 9.4.4.0 help output

[headius]

The code here handles jruby/jruby#7864 by checking for both escaped and unescaped output.

jruby-maven-plugins/ruby-tools/src/test/java/de/saumya/mojo/ruby/script/AbstractLauncherTest.java

Lines 64 to 68 in 90c2f80

	// JRuby 9.4.0.0 thru 9.4.3.0 always emit the escape sequence here (jruby/jruby#7864)
	if (lines[1].startsWith("\033[1m")) {
	assertThat(lines[1]).contains("jruby [switches] [--] [programfile] [arguments]");
	} else {
	assertThat(lines[1]).isEqualTo("Usage: jruby [switches] [--] [programfile] [arguments]");

That issue will be fixed in JRuby 9.4.4.0, so once we upgrade jruby-maven-plugins we can remove the extra check.