RFR(s): 8161338 (jdeprscan) remove JEP 293 non-conforming -cp option

[Stuart Marks]

Hi all,

Please review this small patch to remove the "-cp" option from jdeprscan. This 
is unfortunate, but it doesn't conform to the JEP 293 (GNU style) options 
conventions. The -cp option is retained for existing tools, but jdeprscan is 
new, and it should be fully conformant.

To specify a classpath, use the long form --class-path.

This change also clears out a couple bits of dead code.

Webrev:
	http://cr.openjdk.java.net/~smarks/reviews/8161338/webrev.0/

Bug:
	https://bugs.openjdk.java.net/browse/JDK-8161338

JEP 293:
	http://openjdk.java.net/jeps/293


Thanks,

s'marks