stop setting JAMFILE

[SVN r36328]

boost-build.jam

@@ -6,6 +6,5 @@
 #~ LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
 
 BOOST_ROOT = $(.boost-build-file:D) ;
-JAMFILE = [Jj]amfile.v2 ;
 boost-build tools/build/v2 ;