gh-107450: Remove unnecessary overflow check in parser error handler (#110940)

Author: lysnikolaou

Parser/pegen_errors.c

@@ -240,12 +240,6 @@ _PyPegen_raise_error(Parser *p, PyObject *errtype, int use_mark, const char *err
             col_offset = 0;
         } else {
             const char* start = p->tok->buf  ? p->tok->line_start : p->tok->buf;
-            if (p->tok->cur - start > INT_MAX) {
-                PyErr_SetString(PyExc_OverflowError,
-                    "Parser column offset overflow - source line is too big");
-                p->error_indicator = 1;
-                return NULL;
-            }
             col_offset = Py_SAFE_DOWNCAST(p->tok->cur - start, intptr_t, int);
         }
     } else {