fuzz: remove check about max transactions

[catenacyber]

Link to redmine ticket: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=44798 and other

Describe changes:

• removes fuzzer's check about too many transactions

HTTP1 and other can indeed pipeline many transactions. The protocols for which it caused a timeout now have their limit. I do not think this check is relevant... Ideas ?

[codecov[bot]]

Codecov Report

Merging #7550 (443353a) into master (7ced8de) will decrease coverage by 0.01%. The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #7550      +/-   ##
==========================================
- Coverage   75.80%   75.78%   -0.02%     
==========================================
  Files         658      658              
  Lines      186527   186527              
==========================================
- Hits       141400   141367      -33     
- Misses      45127    45160      +33     

Flag	Coverage Δ
fuzzcorpus	59.95% <ø> (-0.01%)	:arrow_down:
suricata-verify	52.38% <ø> (-0.04%)	:arrow_down:
unittests	60.72% <ø> (+<0.01%)	:arrow_up:

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[suricata-qa]

Information: QA ran without warnings.

Pipeline 7863

[suricata-qa]

Information: QA ran without warnings.

Pipeline 7881

[catenacyber]

Replaced by https://github.com/OISF/suricata/pull/7755