Removing Ruby 1.8 specific code
Fix dependency on a JavaScript engine
Merge pull request #1870 from iNecas/fix-missing-v8

Fix dependency on a JavaScript engine
Merge pull request #1854 from daviddavis/rm_18_code

Removing Ruby 1.8 code (DO NOT MERGE UNTIL AFTER APRIL 8)
comment could not be on line with requires

addressing:
katello.spec: E: specfile-error error: line 79: Dependency tokens must begin with alpha-numeric, '_' or '/': Requires:       ruby193-rubygem(therubyracer) # required by jammit