Remove unused critical section include

Author: BHUVANSH855

Objects/unicodeobject.c

@@ -56,7 +56,6 @@ OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 #include "pycore_pylifecycle.h"   // _Py_SetFileSystemEncoding()
 #include "pycore_pystate.h"       // _PyInterpreterState_GET()
 #include "pycore_pyatomic_ft_wrappers.h"  // FT_ATOMIC_*()
-#include "pycore_critical_section.h"  // Py_BEGIN_CRITICAL_SECTION()
 #include "pycore_ucnhash.h"       // _PyUnicode_Name_CAPI
 #include "pycore_unicodectype.h"  // _PyUnicode_IsXidStart
 #include "pycore_unicodeobject.h" // struct _Py_unicode_state