Define function as static inline in try-catch-impl.h to allow it to
be used in kunit itself and tests.  Also remove unused
kunit_generic_try_catch
Co-developed-by: NKnut Omang <knut.omang@oracle.com>
Signed-off-by: NKnut Omang <knut.omang@oracle.com>
Signed-off-by: NAlan Maguire <alan.maguire@oracle.com>
Reviewed-by: NBrendan Higgins <brendanhiggins@google.com>
Tested-by: NBrendan Higgins <brendanhiggins@google.com>
Signed-off-by: NShuah Khan <skhan@linuxfoundation.org>