[ruby-cvs:72833] kazu:r65733 (trunk): Revert "Use CC without ccache as MJIT_CC"

[kazu at ruby-lang.org]

kazu	2018-11-15 12:45:34 +0900 (Thu, 15 Nov 2018)

  New Revision: 65733

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=65733

  Log:
    Revert "Use CC without ccache as MJIT_CC"
    
    because CI failed: https://travis-ci.org/ruby/ruby/builds/455313917

  Modified files:
    trunk/.travis.yml