intl: Emit no lines in bison generated files

Improve reproducibility:
Do not put any #line preprocessor commands in bison generated files.
These lines contain absolute paths containing file locations on
the host build machine.

Signed-off-by: Juro Bystricky <juro.bystricky@intel.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>