[binutils-gdb] Remove a use of is_mi_like_p from tracepoint.c

[sergiodj+buildbot@sergiodj.net]

*** TEST RESULTS FOR COMMIT f3c6ababac34f3a291997f8d5ea6a63949b58b87 ***

Author: Tom Tromey <tom@tromey.com>
Branch: master
Commit: f3c6ababac34f3a291997f8d5ea6a63949b58b87

Remove a use of is_mi_like_p from tracepoint.c

This removes a use of is_mi_like_p and changes a printf_filtered into
a call to ui_out::text.

ChangeLog
2018-04-30  Tom Tromey  <tom@tromey.com>

	* tracepoint.c (tvariables_info_1): Remove use of is_mi_like_p.