The test-case gdb.ada/mi_catch_ex.exp tests two scenarios.
The two scenarios are separated by:
- a mi_run_to_main (before commit 
b75d55d4d2 "Eliminate mi_run_to_main,
  introduce mi_clean_restart")
- a mi_runto_main (after that commit)
The now removed mi_run_to_main contained a mi_delete_breakpoints, while
mi_runto_main does not, which causes FAILs in the second scenario.
Fix this by adding the missing mi_delete_breakpoints in the test-case, and
likewise in gdb.ada/mi_catch_ex_hand.exp.
Reg-tested on x86_64-linux.
gdb/testsuite/ChangeLog:
2020-10-14  Tom de Vries  <tdevries@suse.de>
	PR testsuite/26732
	* gdb.ada/mi_catch_ex.exp: Do mi_delete_breakpoints before running
	scenario 2.
	* gdb.ada/mi_catch_ex_hand.exp: Same.
+2020-10-14  Tom de Vries  <tdevries@suse.de>
+
+       PR testsuite/26732
+       * gdb.ada/mi_catch_ex.exp: Do mi_delete_breakpoints before running
+       scenario 2.
+       * gdb.ada/mi_catch_ex_hand.exp: Same.
+
 2020-10-13  Pedro Alves  <pedro@palves.net>
 
        * lib/mi-support.exp (mi_clean_restart): New.
 
 #  - continue, the program exits.
 
 with_test_prefix "scenario 2" {
+    mi_delete_breakpoints
     if {[mi_runto_main] < 0} {
        fail "cannot run to main, testcase aborted"
        return 0
 
 #    but exit instead.
 
 with_test_prefix "scenario 2" {
+    mi_delete_breakpoints
     if {[mi_runto_main] < 0} {
        fail "cannot run to main, testcase aborted"
        return 0