fix extra value in M table (2nd try)

[iantaylor-NOAA]

Concisely (20 words or less) describe the issue

The recently-revised (in #307) Natural_Mortality table in Report.sso has an extra value in the output
This PR replaces #367 which accidentally was based on the MV-Tweedie-ver2 branch instead of main.

Please Link issue(s)

No issue. Just a quick fix to a minor bug (example below).

What tests have been done? Upload any model input files created for testing in a zip file, if possible.

Compiled SS3, ran a single model, confirm that the table looks correct.

What tests/review still need to be done? Who can do it, and by when is it needed (ideally)?

Usual automated tests via GitHub action.

Has any new code been documented?

If not, please add documentation before submitting the Pull Request.

• I have documented any new code added (or no new code was added)

Check which is true. This PR requires:

• no further changes to r4ss
• no further changes to the manual
• no further changes to SSI (the SS3 GUI)
• no further changes to the stock synthesis change log (new features, bug reports)

Describe any changes in r4ss/SS3 manual/SSI that are needed (if not checked):

Additional information (optional):

Example of the output with the extra "TIME" value in the "BENCH" rows:

Natural_Mortality report:43
Method: 0
Area Bio_Pattern Sex BirthSeas Settlement Platoon Morph Yr Seas Time Beg/Mid Era 0 1 2 ...
1 1 1 1 1 1 1 1968 1 1968 B BENCH  TIME  0.1 0.1 0.1 ...
1 1 1 1 1 1 1 1968 2 1968.96 B BENCH  TIME  0.1 0.1 0.1 ...
1 1 1 1 1 1 1 1969 1 1969 B VIRG  0.1 0.1 0.1 ...
1 1 1 1 1 1 1 1969 2 1969.96 B VIRG  0.1 0.1 0.1 ...
1 1 1 1 1 1 1 1970 1 1970 B INIT  0.1 0.1 0.1 ...
1 1 1 1 1 1 1 1970 2 1970.96 B INIT  0.1 0.1 0.1 ...
1 1 1 1 1 1 1 1971 1 1971 B TIME  0.1 0.1 0.1 ...
1 1 1 1 1 1 1 1971 2 1971.96 B TIME  0.1 0.1 0.1 ...

[iantaylor-NOAA]

Failed call-build-ss3-warnings test seems unrelated to this PR.
It is discussed in #369.

[Rick-Methot-NOAA]

good catch. Thanks