Removes the environment variable with the given name.
If the variable isn't in the environment, this function returns successfully without doing anything.
Note: On some platforms, modifying environment variables may not be allowed in multi-threaded programs. See e.g. glibc.
See Implementation
Removes the environment variable with the given name.
If the variable isn't in the environment, this function returns successfully without doing anything.
Note: On some platforms, modifying environment variables may not be allowed in multi-threaded programs. See e.g. glibc.