Revert "Settings: Dual Panel Mode (3/4)"

This reverts commit 0812b06712eab90b6f1a58c76efb2a4c4c060995.
Revert "Settings: Dual Panel Mode (2/4)"

This reverts commit 3d084059ca2ab799e83cd4c318b4de50d88682c3.
Revert "Settings: Dual Panel Mode (1/4)"

This reverts commit 7ca9b5e8d422ac02fb8ea2a8fb8f5defac06302f.