mtd: chips: remove redundant assignment to variable timeo

mtd: chips: remove redundant assignment to variable timeo

In two functions the variable timeo is being initialized with a value
that is never read, it is being re-assigned later on. The initializations
are redundant and can be removed.

Cleans up clang scan build warning:
warning: Value stored to 'timeo' during its initialization is never
read [deadcode.DeadStores]

Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20240215140106.2062858-1-colin.i.king@gmail.com