RFR(XS): JDK-8153549 - [TESTBUG] remove obsolete runtime/SharedArchiveFile/BasicJarBuilder

[Mikhailo Seledtsov]

Please review this simple fix - the deletion of obsolete/redundant test 
utility class
BasicJarBuilder. The functionality is now inside the 
ClassFileInstaller.java, and this
utility is redundant. The work here was mainly to make sure no other parts
of jdk or test reference BasicJarBuilder.

   JBS: https://bugs.openjdk.java.net/browse/JDK-8153549
   Webrev:  http://cr.openjdk.java.net/~mseledtsov/8153549.00/
   Testing:
     - ensure no-one else uses it: grepped all hs-rt repository - no 
references
     - removed BasicJarBuilder; ran hotspot_all group locally on Linux-x64
         Pass

Thank you,
Misha