tests/common/159: Disable b_coverage=true
Setting it seems to cause it to be set on all later tests, which causes
a lot of failures:
-project('reserved target names', 'c',
- default_options : ['b_coverage=true'])
+project('reserved target names', 'c')
+ # FIXME: Setting this causes it to leak to all other tests
+ #default_options : ['b_coverage=true']
subdir('all')
subdir('benchmark')
