ARM: dts: paz00: remove display-timings node

Paz00 can have multiple panels with different timings, but they
all share common feature - panel exposes EDID.

Tested-by: Agneli <poczt@protonmail.ch> # Toshiba AC100 T20
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>