staging: ti-soc-thermal: remove extrapolation rules from TODO

Extrapolation rules have been revisited.
Signed-off-by: NEduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/ti-soc-thermal/TODO

@@ -4,7 +4,6 @@ on ti-bandgap.c:
 - Revisit PM support
 
 on ti-thermal-common.c/ti-thermal.h:
-- Revisit extrapolation constants for O4/O5
 - Revisit need for locking
 
 generally: