message: [fuzzing] removing google oss-fuzz hacks
  According to this PR we can now remove these flags:
  There were present presumably to work with a rust codebase and Google's environement.
  Closes:
  Approved by: sausagee
diff: @@ -27,11 +27,6 @@ do
  rm -r fuzz/corpus/$line
  done
  -# rust libfuzzer flags (https://github.com/rust-fuzz/libfuzzer/blob/master/build.rs#L12)
  -export CUSTOM_LIBFUZZER_PATH="$LIB_FUZZING_ENGINE_DEPRECATED"
  -export CUSTOM_LIBFUZZER_STD_CXX=c++
  -# export CUSTOM_LIBFUZZER_STD_CXX=none
  -
  # RUSTC_BOOTSTRAP: to get some nightly features like ASAN
  export RUSTC_BOOTSTRAP=1
  @@ -40,9 +35,6 @@ RUSTFLAGS="$RUSTFLAGS --cfg fuzzing" # used to change code logic
  RUSTFLAGS="$RUSTFLAGS -Cdebug-assertions" # to get debug_assert in rust
  RUSTFLAGS="$RUSTFLAGS -Zsanitizer=address" # address sanitizer (ASAN)
  -RUSTFLAGS="$RUSTFLAGS -Cdebuginfo=1"
  -RUSTFLAGS="$RUSTFLAGS -Cforce-frame-pointers"
  -
  RUSTFLAGS="$RUSTFLAGS -Cpasses=sancov"
  RUSTFLAGS="$RUSTFLAGS -Cllvm-args=-sanitizer-coverage-level=4"
  RUSTFLAGS="$RUSTFLAGS -Cllvm-args=-sanitizer-coverage-trace-compares"
  