Revert "[flang] Detect circularly defined interfaces of procedures"

This reverts commit 93c5e6bb.

This patch updates resolve102.f90 which is now failing in 6 out 8 of our
public buildbots:
  * http://lab.llvm.org:8011/#/builders/21/builds/9625
  * http://lab.llvm.org:8011/#/builders/134/builds/2395
  * http://lab.llvm.org:8011/#/builders/79/builds/6298
  * http://lab.llvm.org:8011/#/builders/66/builds/2084
  * http://lab.llvm.org:8011/#/builders/135/builds/2485
  * http://lab.llvm.org:8011/#/builders/32/builds/3551

Please see the following revisions for more context:
  * https://reviews.llvm.org/D97201
  * https://reviews.llvm.org/D97749