Revert "disable prox for one iteration after enforcing integers"

This reverts commit c6f41cb.

Author: bknueven

mpisppy/extensions/integer_relax_then_enforce.py

@@ -31,7 +31,6 @@ def pre_iter0(self):
         for s in self.opt.local_scenarios.values():
             self.integer_relaxer.apply_to(s) 
         self._integers_relaxed = True
-        self._reenable_prox = False
 
     def _unrelax_integers(self):
         for sub in self.opt.local_subproblems.values():
@@ -46,14 +45,8 @@ def _unrelax_integers(self):
                     for v in vlist:
                         subproblem_solver.update_var(v)
         self._integers_relaxed = False
-        if not self.opt.prox_disabled:
-            self.opt._disable_prox()
-            self._reenable_prox = True
 
     def miditer(self):
-        if self._reenable_prox:
-            self.opt._reenable_prox()
-            self._reenable_prox = False
         if not self._integers_relaxed:
             return
         # time is running out