totally disable rotation gesture to change screen orientation

frontend/apps/reader/modules/readerrotation.lua

@@ -7,7 +7,6 @@ local GestureRange = require("ui/gesturerange")
 local _ = require("gettext")
 
 local ReaderRotation = InputContainer:new{
-    ROTATE_ANGLE_THRESHOLD = 15,
     current_rotation = 0
 }
 
@@ -25,21 +24,6 @@ function ReaderRotation:init()
                 event = "Rotate", args = 90 },
         }
     end
-    if Device:isTouchDevice() then
-        self.ges_events = {
-            RotateGes = {
-                GestureRange:new{
-                    ges = "rotate",
-                    range = Geom:new{
-                        x = 0, y = 0,
-                        w = Screen:getWidth(),
-                        h = Screen:getHeight(),
-                    },
-                    rate = 0.3,
-                }
-            },
-        }
-    end
 end
 
 -- TODO: reset rotation on new document, maybe on new page?
@@ -50,15 +34,4 @@ function ReaderRotation:onRotate(rotate_by)
     return true
 end
 
-function ReaderRotation:onRotateGes(arg, ges)
-    if ges.angle and ges.angle > self.ROTATE_ANGLE_THRESHOLD then
-        if Screen:getScreenMode() == "portrait" then
-            self.ui:handleEvent(Event:new("SetScreenMode", "landscape"))
-        else
-            self.ui:handleEvent(Event:new("SetScreenMode", "portrait"))
-        end
-    end
-    return true
-end
-
 return ReaderRotation