ARM: 7084/1: mach-integrator: retire some timer macros

These macros are not used by anything since the switch to
generic time in commit b9cedda2
so let's retire them.

Acked-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>