Revert "Clang-Tidy: added Google-specific warnings (except TODO readability one)."
Revert "Clang-Tidy: added Google-specific warnings (except TODO readability one)."

This reverts commit 746d8a7acb2bc989d3e29055234592f183e957e1.

hsorby/libcellml,MichaelClerx/libcellml,cellml/libcellml,nickerso/libcellml,nickerso/libcellml,MichaelClerx/libcellml,hsorby/libcellml,cellml/libcellml,cellml/libcellml,nickerso/libcellml,MichaelClerx/libcellml,hsorby/libcellml,nickerso/libcellml,cellml/libcellml,hsorby/libcellml