Remove the "Simulate Eyepiece View" feature and strip down `EyepieceField`
The idea here is that the offerings of the eyepiece view feature have already been superceded by two more powerful and easier-to-use features in KStars:
- The HiPS Overlay
- The "Views" feature
The only feature provided by the old Eyepiece View dialog that is perhaps removed without alternative is the ability to print a chart with ticks indicating the orientation of the chart at different times in a Dobsonian eyepiece. This feature was crude, likely buggy, unmaintained and not universal. It was probably never used outside of my testing. Similar results can instead be achieved using a DBus-based Python script, if ever desired, with new DBus methods to be added in a different commit.
As a result, this commit:
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Removes the "Simulate Eyepiece View" feature from the popup menus – on the sky-map and in Observation Planner, and the corresponding dialog UI
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Retains the DBus method for backwards compatibility