Remove suppression from warning: "need a bytes-like object, NoneType found"

[kevinclark19a]

Description

The suppression was added to ignore errors produced when the agent receives an empty goal state. Those errors were fixed a while ago (initial fix in #2016, then added back in #2141 after those changes were reverted).

This PR removes the suppression so that we can catch errors with the same signature.

[codecov]

Codecov Report

Merging #2529 (0e2e848) into develop (2027103) will increase coverage by 0.05%.
The diff coverage is n/a.

@@             Coverage Diff             @@
##           develop    #2529      +/-   ##
===========================================
+ Coverage    71.96%   72.01%   +0.05%     
===========================================
  Files          102      102              
  Lines        15188    15188              
  Branches      2403     2403              
===========================================
+ Hits         10930    10938       +8     
+ Misses        3775     3770       -5     
+ Partials       483      480       -3     

Impacted Files	Coverage Δ
azurelinuxagent/common/event.py	86.03% <0.00%> (+0.67%)	⬆️
azurelinuxagent/ga/collect_telemetry_events.py	91.43% <0.00%> (+1.71%)	⬆️

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