Do not setup the 'wine' exe_wrapper in meson.

We cannot install it on travis (for now ?) and we don't use it anyway.

This have somehow to be fixed as the wine tool will be necessary to test
binaries and we want tests.

templates/meson_cross_file.txt

@@ -4,7 +4,6 @@ c = '{which:{binaries[c]}}'
 ar = '{which:{binaries[ar]}}'
 cpp = '{which:{binaries[cpp]}}'
 strip = '{which:{binaries[strip]}}'
-exe_wrapper = 'wine'
 
 [properties]
 c_link_args = ['-lwinmm', '-lws2_32', '-lshlwapi', '-lrpcrt4']