Remove trailing dots in log messages and errors

[borzunov]

This is important to make the output consistent.

[codecov]

Codecov Report

Merging #419 (beb7d69) into master (c328698) will increase coverage by 0.19%.
The diff coverage is 37.03%.

@@            Coverage Diff             @@
##           master     #419      +/-   ##
==========================================
+ Coverage   83.49%   83.68%   +0.19%     
==========================================
  Files          77       77              
  Lines        7790     7790              
==========================================
+ Hits         6504     6519      +15     
+ Misses       1286     1271      -15     

Impacted Files	Coverage Δ
hivemind/averaging/allreduce.py	79.06% <0.00%> (ø)
hivemind/averaging/control.py	94.17% <0.00%> (ø)
hivemind/averaging/load_balancing.py	95.91% <0.00%> (ø)
hivemind/averaging/partition.py	98.01% <0.00%> (ø)
hivemind/dht/dht.py	89.87% <0.00%> (ø)
hivemind/dht/routing.py	94.11% <0.00%> (ø)
hivemind/hivemind_cli/run_server.py	0.00% <ø> (ø)
hivemind/moe/client/moe.py	92.82% <0.00%> (ø)
hivemind/optim/collaborative.py	23.64% <0.00%> (ø)
hivemind/optim/experimental/state_averager.py	86.86% <0.00%> (ø)
... and 16 more

[justheuristic]

Thanks! I was in the wrong for not removing them in the first place.