gh-110721: Remove unused code from suggestions.c after moving PyErr_Display to use the traceback module (#113712)

Modules/Setup.bootstrap.in

@@ -11,6 +11,7 @@ faulthandler faulthandler.c
 posix posixmodule.c
 _signal signalmodule.c
 _tracemalloc _tracemalloc.c
+_suggestions _suggestions.c
 
 # modules used by importlib, deepfreeze, freeze, runpy, and sysconfig
 _codecs _codecsmodule.c

Modules/_suggestions.c

@@ -0,0 +1,63 @@
+#include "Python.h"
+#include "pycore_pyerrors.h"
+#include "clinic/_suggestions.c.h"
+
+/*[clinic input]
+module _suggestions
+[clinic start generated code]*/
+/*[clinic end generated code: output=da39a3ee5e6b4b0d input=e58d81fafad5637b]*/
+
+/*[clinic input]
+_suggestions._generate_suggestions
+    candidates: object
+    item: unicode
+    /
+Returns the candidate in candidates that's closest to item
+[clinic start generated code]*/
+
+static PyObject *
+_suggestions__generate_suggestions_impl(PyObject *module,
+                                        PyObject *candidates, PyObject *item)
+/*[clinic end generated code: output=79be7b653ae5e7ca input=ba2a8dddc654e33a]*/
+{
+   // Check if dir is a list
+    if (!PyList_Check(candidates)) {
+        PyErr_SetString(PyExc_TypeError, "candidates must be a list");
+        return NULL;
+    }
+
+    // Check if all elements in the list are Unicode
+    Py_ssize_t size = PyList_Size(candidates);
+    for (Py_ssize_t i = 0; i < size; ++i) {
+        PyObject *elem = PyList_GetItem(candidates, i);
+        if (!PyUnicode_Check(elem)) {
+            PyErr_SetString(PyExc_TypeError, "all elements in 'candidates' must be strings");
+            return NULL;
+        }
+    }
+
+    PyObject* result =  _Py_CalculateSuggestions(candidates, item);
+    if (!result && !PyErr_Occurred()) {
+        Py_RETURN_NONE;
+    }
+    return result;
+}
+
+
+static PyMethodDef module_methods[] = {
+    _SUGGESTIONS__GENERATE_SUGGESTIONS_METHODDEF
+    {NULL, NULL, 0, NULL} // Sentinel
+};
+
+static struct PyModuleDef suggestions_module = {
+    PyModuleDef_HEAD_INIT,
+    "_suggestions",
+    NULL,
+    -1,
+    module_methods
+};
+
+PyMODINIT_FUNC PyInit__suggestions(void) {
+    return PyModule_Create(&suggestions_module);
+}
+

Modules/clinic/_suggestions.c.h

@@ -0,0 +1,41 @@
+/*[clinic input]
+preserve
+[clinic start generated code]*/
+
+#include "pycore_modsupport.h"    // _PyArg_CheckPositional()
+
+PyDoc_STRVAR(_suggestions__generate_suggestions__doc__,
+"_generate_suggestions($module, candidates, item, /)\n"
+"--\n"
+"\n"
+"Returns the candidate in candidates that\'s closest to item");
+
+#define _SUGGESTIONS__GENERATE_SUGGESTIONS_METHODDEF    \
+    {"_generate_suggestions", _PyCFunction_CAST(_suggestions__generate_suggestions), METH_FASTCALL, _suggestions__generate_suggestions__doc__},
+
+static PyObject *
+_suggestions__generate_suggestions_impl(PyObject *module,
+                                        PyObject *candidates, PyObject *item);
+
+static PyObject *
+_suggestions__generate_suggestions(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
+{
+    PyObject *return_value = NULL;
+    PyObject *candidates;
+    PyObject *item;
+
+    if (!_PyArg_CheckPositional("_generate_suggestions", nargs, 2, 2)) {
+        goto exit;
+    }
+    candidates = args[0];
+    if (!PyUnicode_Check(args[1])) {
+        _PyArg_BadArgument("_generate_suggestions", "argument 2", "str", args[1]);
+        goto exit;
+    }
+    item = args[1];
+    return_value = _suggestions__generate_suggestions_impl(module, candidates, item);
+
+exit:
+    return return_value;
+}
+/*[clinic end generated code: output=1d8e963cdae30b13 input=a9049054013a1b77]*/