Don't force table widths in versions.rst

Setting `:widths:` leads to weird wrapping, as some columns are too
narrow. Just letting Sphinx figure it out, OTOH, looks fine. Let
the software be smart.

Signed-off-by: FeRD (Frank Dana) <ferdnyc@gmail.com>

Author: ferdnyc

versions.rst

@@ -23,7 +23,6 @@ Dates shown in *italic* are scheduled and can be adjusted.
 
 .. csv-table::
    :header-rows: 1
-   :widths: 5, 5, 15, 15, 12, 40
    :file: include/branches.csv
 
 .. Remember to update main branch in the paragraph above too
@@ -34,7 +33,6 @@ Unsupported Versions
 
 .. csv-table::
    :header-rows: 1
-   :widths: 5, 5, 15, 15, 12, 40
    :file: include/end-of-life.csv