clk: Remove myself as a maintainer

clk: Remove myself as a maintainer

Unfortunately I don't really have time to review clock patches. When I
initially started maintaining this subsystem I had more free time than I do
now. But I also found it hard to motivate myself to review patches.  Many
clock patches add support for new SoCs and they are time consuming to
review properly. You effectively have to spend a few hours reading the
reference manual (if it's public!) and reviewing drivers is no small feat
either. This is made more difficult since clocking is often very different
between SoCs and it can be difficult to determine whether something is a
bug in the driver or a workaround for some hardware behavior. I mostly
don't care about any given SoC unless I'm hacking on it so I ended up with
a ton (more than 7000) of unreviewed patches piling up in my inbox. I'd
love to be more active, but I have a day job and I usually want to work on
something more interesting when I get home. I still think the clock
subsystem is a major mess but I don't care enough to fix it :l

The subsystem itself should probably get orphaned since AFAICT all patches
go through the mach/arch maintainer or to Tom.

Signed-off-by: Sean Anderson <seanga2@gmail.com>