Remove unnecessary gasComputation.Reset call

[iulianpascalau]

Description of the reasoning behind the pull request

• gasComputation component started to consume large amounts of time when the calls to SetGasProvided were done on a several hundreds of transactions and up. The time consumed was caused that each transaction hash from the miniblock was added as record in the map that was latter used to append each executed hash, causing exponential time of execution consumed.

Proposed Changes

• removed unnecessary gasComputation.Reset call from the basePreProcess.handleProcessTransactionInit call

Testing procedure

• standard system tests
• half network tests, before and after the partial miniblock execution enable epoch

[codecov-commenter]

Codecov Report

Base: 73.93% // Head: 73.93% // Increases project coverage by +0.00% 🎉

Coverage data is based on head (3033c1c) compared to base (a7f97d6).
Patch has no changes to coverable lines.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #4535   +/-   ##
=======================================
  Coverage   73.93%   73.93%           
=======================================
  Files         679      679           
  Lines       86969    86968    -1     
=======================================
+ Hits        64298    64301    +3     
+ Misses      17866    17864    -2     
+ Partials     4805     4803    -2     

Impacted Files	Coverage Δ
process/block/preprocess/basePreProcess.go	80.95% <ø> (-0.09%)	⬇️
statusHandler/statusMetricsProvider.go	97.92% <0.00%> (+0.82%)	⬆️
storage/txcache/txListBySenderMap.go	100.00% <0.00%> (+2.50%)	⬆️

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[gabi-vuls]

System test passed.