Heated seats - Removing the 10 heated seat pads per car. Possible, savings would be fairly minimal.
Leather seats - Change to cloth is more affordable. Additional production line required to make cloth seats, so you have to weight initial outlay vs. extra profit in the cloth seats over the leather seats, and then also factor in how many of this lower end model you would sell. Time for return on investment / break-even is likely to be really long.
Tablet size - reduce to 8 or 10 inch, enough to display the speed/gear, backup cam, basic radio. Remove nav/internet radio. Massive cost increase to stock an additional part, and have to redesign all of the software to run on the smaller screen.
Glass Roof- Remove and change to solid metal roof. Possible, but cost overhead to re-certify roll-over safety and manufacture new metal molds to stamp out new roof part is huge. May not save much in cost anyway.
Auto wipers- Not sure if there is an actual sensor that controls this or if it's just done through the camera system but either way it could go. No cost, done through cameras and AP computer.
Power/memory seats- change to manual/mechanical. Have to stock another model of seat, see the Leather seats comment above.
No Autopilot function - Completely remove extra AP computer. 7 extra cameras could go, all but backup cam. 8 Cameras if you count the non-functioning interior camera. Can't do it -- all safety features such as automatic emergency braking, lane departure avoidance, side collision avoidance, etc. are all dependent on AP cameras and AP computer.
Remove parking (ultrasonic) sensors - Not needed since no AP anyway. Can't remove -- needed for driving safety features.
Standard cruise only - Remove front radar. Can't remove -- needed for driving safety features.
Charge port door- Remove motor & make manually hinged. Have to stock another part, time for ROI/break-even is long.
Climate vents- Add manual adjusters. Massive cost -- requires redesign of entire dash and HVAC system.
Frunk- remove liners, make this utilitarian only with manual cable release.
Trunk - remove solenoid & add mechanical release. Possible, but cost savings likely to be minimal.
Remove footwell lightning - I always have mine off anyway. Cost savings of leaving the bulbs out is probably pennies.
Remove one usb in center console. Probably cost increase, as you're saving only pennies in parts, but need to stock different assembly.
Remove gloss looking center console/door trim- from a manufacturing standpoint regular matt black would likely be lower cost. Pennies in savings, not worth stocking second part.
Remove wood dash trim, go-to basic black. See above.
Aero covers- do not include with basic models. Range will already be low on low-cost model due to smaller battery, removing Aero covers reduces range further.
Perhaps a simpler key system of some kind? Phone-as-key already saves money by not including keyfob.
I also agree with posters above -- this type of vehicle should not be sold under the Tesla brand. You would need a downscale brand for this. Probably would be a good idea anyway, since if you really wanted to make an EV that's as low a cost as possible, a complete redesign from the ground up is what you'd want to do. This is probably viable only after the battery manufacturing costs come down with volume, not before. A 20% reduction in battery cost is probably more than the total savings in ALL of the modifications you cited above.