Temporary disable obsolete warning for RIFac/RIKer

[fingolfin]

... to avoid breaking the matgrp test suite.

This should be reverted again at some point in the future, once a successor for matgrp 0.70 has been released.

[codecov[bot]]

Codecov Report

Merging #320 (6a83e0e) into master (206a538) will increase coverage by 0.05%. The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #320      +/-   ##
==========================================
+ Coverage   78.53%   78.59%   +0.05%     
==========================================
  Files          43       43              
  Lines       18445    18459      +14     
==========================================
+ Hits        14486    14508      +22     
+ Misses       3959     3951       -8     

Impacted Files	Coverage Δ
gap/base/recognition.gd	100.00% <100.00%> (ø)
gap/perm.gi	97.28% <0.00%> (+0.04%)	:arrow_up:
gap/base/recognition.gi	68.92% <0.00%> (+0.04%)	:arrow_up:
gap/projective/classicalnatural.gi	94.18% <0.00%> (+0.07%)	:arrow_up:
gap/matrix/classical.gi	75.24% <0.00%> (+0.08%)	:arrow_up:
gap/projective/almostsimple.gi	65.84% <0.00%> (+0.09%)	:arrow_up:
gap/matrix/ppd.gi	93.27% <0.00%> (+0.11%)	:arrow_up:
gap/projective/AnSnOnFDPM.gi	89.75% <0.00%> (+0.12%)	:arrow_up:
gap/perm/giant.gi	93.27% <0.00%> (+0.22%)	:arrow_up:
gap/projective/c6.gi	62.17% <0.00%> (+0.25%)	:arrow_up:
... and 1 more