pip, don't use --user as it automatically does that

With --user and then sudo make install it would be installed
in the home dir of root, which doesn't make sense.
Newer versions of pip (since early 2020) falls back to user-install
when the global site is not writeable.

libs/pymod/CMakeLists.txt

@@ -72,14 +72,7 @@ configure_file(redirector/pyproject.toml ${exportDir}/pyproject.toml @ONLY)
 configure_file(redirector/setup.cfg.in ${exportDir}/setup.cfg @ONLY)
 configure_file(redirector/mod/__init__.py.in ${exportDir}/mod/__init__.py @ONLY)
 if(${BUILD_PY_MOD_PIP})
-    # https://www.scivision.dev/cmake-install-python-package/
-    # detect virtualenv and set Pip args accordingly
-    if(DEFINED ENV{VIRTUAL_ENV} OR DEFINED ENV{CONDA_PREFIX})
-        set(_pip_args)
-    else()
-        set(_pip_args "--user")
-    endif()
-    install(CODE "execute_process(COMMAND ${Python3_EXECUTABLE} -m pip install . ${_pip_args} WORKING_DIRECTORY ${exportDir})"
+    install(CODE "execute_process(COMMAND ${Python3_EXECUTABLE} -m pip install . WORKING_DIRECTORY ${exportDir})"
             COMPONENT pymod_run)
 endif()