[RFC 0/1] FIT documentation link vs copy

I'm proposing linking the FIT documentation instead of double book keeping it, it does have the disadvantage of making it more difficult to see the documentation especially if offline.

Sam Povilus (1): doc: Remove FIT documentation that is elsewhere

doc/usage/fit/index.rst | 14 +- doc/usage/fit/source_file_format.rst | 682 +-------------------------- 2 files changed, 5 insertions(+), 691 deletions(-)