remove redundant argument to log_helper (GH-93440)

Modules/mathmodule.c

@@ -2312,7 +2312,7 @@ math_modf_impl(PyObject *module, double x)
    in that int is larger than PY_SSIZE_T_MAX. */
 
 static PyObject*
-loghelper(PyObject* arg, double (*func)(double), const char *funcname)
+loghelper(PyObject* arg, double (*func)(double))
 {
     /* If it is int, do it ourselves. */
     if (PyLong_Check(arg)) {
@@ -2372,11 +2372,11 @@ math_log_impl(PyObject *module, PyObject *x, int group_right_1,
     PyObject *num, *den;
     PyObject *ans;
 
-    num = loghelper(x, m_log, "log");
+    num = loghelper(x, m_log);
     if (num == NULL || base == NULL)
         return num;
 
-    den = loghelper(base, m_log, "log");
+    den = loghelper(base, m_log);
     if (den == NULL) {
         Py_DECREF(num);
         return NULL;
@@ -2402,7 +2402,7 @@ static PyObject *
 math_log2(PyObject *module, PyObject *x)
 /*[clinic end generated code: output=5425899a4d5d6acb input=08321262bae4f39b]*/
 {
-    return loghelper(x, m_log2, "log2");
+    return loghelper(x, m_log2);
 }
 
 
@@ -2419,7 +2419,7 @@ static PyObject *
 math_log10(PyObject *module, PyObject *x)
 /*[clinic end generated code: output=be72a64617df9c6f input=b2469d02c6469e53]*/
 {
-    return loghelper(x, m_log10, "log10");
+    return loghelper(x, m_log10);
 }