PYCBC-1796: Remove stray Py_Initialize() in PyInit__core

Changes
-------
* Delete the wrong-layer Py_Initialize() call at the top of
  PyInit__core; the module is already running inside an initialized
  interpreter by the time its init function is called

Change-Id: Ice4633b5a96721e053678150b9800654abd831dd
Reviewed-on: https://review.couchbase.org/c/couchbase-python-client/+/249277
Tested-by: Build Bot <build@couchbase.com>
Reviewed-by: Sergey Avseyev <sergey.avseyev@gmail.com>

Author: thejcfactor

src/module.cxx

@@ -129,8 +129,6 @@ static PyModuleDef pycbc_core_module = {
 PyMODINIT_FUNC
 PyInit__core(void)
 {
-  Py_Initialize();
-
   PyObject* module = PyModule_Create(&pycbc_core_module);
   if (module == nullptr) {
     return nullptr;