Remove unnecessary lines from benchmark examples

[mostafaelhoushi]

Removed some lines that shouldn't have been in the benchmarks

[codecov-commenter]

Codecov Report

Merging #607 (ea99005) into development (0a40983) will increase coverage by 0.10%.
The diff coverage is n/a.

@@               Coverage Diff               @@
##           development     #607      +/-   ##
===============================================
+ Coverage        88.17%   88.28%   +0.10%     
===============================================
  Files              114      114              
  Lines             6708     6708              
===============================================
+ Hits              5915     5922       +7     
+ Misses             793      786       -7     

Impacted Files	Coverage Δ
compiler_gym/views/observation_space_spec.py	85.71% <0.00%> (-3.58%)	⬇️
compiler_gym/views/observation.py	97.29% <0.00%> (-2.71%)	⬇️
compiler_gym/envs/gcc/service/gcc_service.py	96.70% <0.00%> (-0.37%)	⬇️
compiler_gym/envs/llvm/datasets/cbench.py	80.74% <0.00%> (+0.74%)	⬆️
...loop_tool/service/loop_tool_compilation_session.py	89.79% <0.00%> (+1.36%)	⬆️
compiler_gym/service/connection.py	80.00% <0.00%> (+1.96%)	⬆️

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[ChrisCummins]

LGTM