autotest: neaten Copter Loiter test

Tools/autotest/arducopter.py

@@ -435,48 +435,39 @@ def LoiterToAlt(self):
 
         self.context_push()
 
-        ex = None
-        try:
-
-            self.set_parameters({
-                "PLND_ENABLED": 1,
-                "PLND_TYPE": 4,
-            })
+        self.set_parameters({
+            "PLND_ENABLED": 1,
+            "PLND_TYPE": 4,
+        })
 
-            self.set_analog_rangefinder_parameters()
+        self.set_analog_rangefinder_parameters()
 
-            self.reboot_sitl()
+        self.reboot_sitl()
 
-            num_wp = self.load_mission("copter_loiter_to_alt.txt")
+        num_wp = self.load_mission("copter_loiter_to_alt.txt")
 
-            self.change_mode('LOITER')
+        self.change_mode('LOITER')
 
-            self.install_terrain_handlers_context()
-            self.wait_ready_to_arm()
+        self.install_terrain_handlers_context()
+        self.wait_ready_to_arm()
 
-            self.arm_vehicle()
+        self.arm_vehicle()
 
-            self.change_mode('AUTO')
+        self.change_mode('AUTO')
 
-            self.set_rc(3, 1550)
+        self.set_rc(3, 1550)
 
-            self.wait_current_waypoint(2)
+        self.wait_current_waypoint(2)
 
-            self.set_rc(3, 1500)
+        self.set_rc(3, 1500)
 
-            self.wait_waypoint(0, num_wp-1, timeout=500)
+        self.wait_waypoint(0, num_wp-1, timeout=500)
 
-            self.wait_disarmed()
-        except Exception as e:
-            self.print_exception_caught(e)
-            ex = e
+        self.wait_disarmed()
 
         self.context_pop()
         self.reboot_sitl()
 
-        if ex is not None:
-            raise ex
-
     # Tests all actions and logic behind the radio failsafe
     def ThrottleFailsafe(self, side=60, timeout=360):
         '''Test Throttle Failsafe'''