BLD: remove numexpr/tables from 2.7_locale build so numexpr tests will skip

     (and if they don't that's a problem)

Author: jreback

ci/requirements-2.7_LOCALE.txt

@@ -7,8 +7,6 @@ xlrd==0.9.2
 numpy==1.6.1
 cython==0.19.1
 bottleneck==0.6.0
-numexpr==2.1
-tables==2.3.1
 matplotlib==1.3.0
 patsy==0.1.0
 html5lib==1.0b2