REMOVE common.cmakev6.0remove_common_cmake

This repo literally started with common.cmake. However, I think that in
this day and age, it is, to put it mildly, outdated. Feature by feature:

* The C++ standard is better defined on a per-project basis, and it's
  very easy. Frankly, I'm surprised GCC still (as of March '26) defaults
  to something pre-11 (or at least I think it does).
* The warning options are, again, very easy to do on a per-project
  basis, and perhaps they should be defined there.
* The Windows-only defines (NOMINMAX, etc.) are, again, very easy to
  define on the project level, and don't warrant a separate file.
* The static runtime thing is more tricky. I use static runtime linking
  on Windows only, basically. And since about 3.15, it supports
  CMAKE_MSVC_RUNTIME_LIBRARY, which can set up the linking without my
  help. I don't care about the older versions enough to keep maintenance.
* Symbol stripping is better done when calling `cmake --install --strip`
  in modern CMake version. Otherwise, it's a simple compilation flag for
  Release builds.
* Installing PDBs does require some trickery though. It's simple enough:
  you just call install() with $<TARGET_PDB_FILE> or whatever it's
  called.

1 files changed, 0 insertions, 3 deletions

diff --git a/pyproject.toml b/pyproject.toml
index 80f5b5b..8bfa7c6 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -38,7 +38,4 @@ script-files = [
     "tools/project-clang-format.py",
 ]
 
-[tool.setuptools.data-files]
-"share/cmake" = ["common.cmake"]
-
 [tool.setuptools_scm]