bpo-26219: remove unused code (GH-13775)

This code was for deoptimization, which is removed from PR-12884.

Author: methane

Python/ceval.c

@@ -1117,9 +1117,6 @@ _PyEval_EvalFrameDefault(PyFrameObject *f, int throwflag)
  assert(co_opt_offset <= co->co_opcache_size); \
  co_opcache = &co->co_opcache[co_opt_offset - 1]; \
  assert(co_opcache != NULL); \
- if (co_opcache->optimized < 0) { \
- co_opcache = NULL; \
- } \
  } \
  } \
  } while (0)