chore: remove switch_to_default_context (#530)

Author: KazuCocoa

lib/appium_lib_core/common/base/driver.rb

@@ -434,18 +434,6 @@ def within_context(context, &block)
           block_given? ? @bridge.within_context(context, &block) : @bridge.within_context(context)
         end
 
-        # @deprecated Use set context with proper context name instead.
-        # Change to the default context. This is equivalent to +set_context nil+.
-        #
-        # @example
-        #
-        #   @driver.switch_to_default_context
-        #
-        def switch_to_default_context
-          ::Appium::Logger.warn '[DEPRECATION] Please set proper context instead of calling this method.'
-          @bridge.switch_to_default_context
-        end
-
         # @return [String] The context currently being used.
         #
         # @example

lib/appium_lib_core/common/device/context.rb

@@ -29,10 +29,6 @@ def within_context(context)
             end
           end
 
-          def switch_to_default_context
-            set_context nil
-          end
-
           def current_context
             execute :current_context
           end

lib/appium_lib_core/device.rb

@@ -29,7 +29,7 @@ def extended(_mod)
             :hide_keyboard, :is_keyboard_shown,
             :ime_activate, :ime_available_engines, :ime_active_engine, :ime_activated, :ime_deactivate,
             :get_settings, :update_settings,
-            :within_context, :switch_to_default_context, :current_context, :available_contexts, :set_context,
+            :within_context, :current_context, :available_contexts, :set_context,
             :push_file, :pull_file, :pull_folder,
             :keyevent, :press_keycode, :long_press_keycode,
             :match_images_features, :find_image_occurrence, :get_images_similarity, :compare_images,