ovn-tester: Remove unused __iter__ and __next__ from Context.

With the switch to asynchronous code, these methods are no longer used
and they're no longer useful. Remove.

Signed-off-by: Mark Michelson <mmichels@redhat.com>

ovn-tester/ovn_context.py

@@ -35,33 +35,6 @@ def __exit__(self, type, value, traceback):
         ovn_stats.report(self.test_name, brief=self.brief_report)
         print(f'***** Exiting context {self.test_name} *****')
 
-    def __iter__(self):
-        return self
-
-    def __next__(self):
-        now = time.perf_counter()
-        if self.iteration_start:
-            duration = now - self.iteration_start
-            ovn_stats.add(ITERATION_STAT_NAME, duration, failed=self.failed)
-            print(f'***** Context {self.test_name}, '
-                  f'Iteration {self.iteration}, '
-                  f'Result: {"FAILURE" if self.failed else "SUCCESS"} *****')
-        self.failed = False
-        if self.test:
-            # exec external cmd
-            # self.test.exec_cmd(self.iteration, self.test_name)
-            pass
-        self.iteration_start = now
-        if self.iteration < self.max_iterations - 1:
-            self.iteration += 1
-            print(f'***** Context {self.test_name}, '
-                  f'Iteration {self.iteration} *****')
-            return self.iteration
-        raise StopIteration
-
-    def fail(self):
-        self.failed = True
-
     async def iteration_started(self, iteration):
         '''Explicitly begin iteration 'n'. This is necessary when running
         asynchronously since task starts and ends can overlap.'''