Now that we have a read_boot_clock64() function available on every
architecture, and converted all the users to it, it's time to remove
the (now unused) read_boot_clock() completely from the kernel.
Cc: Thomas Gleixner <[email protected]>
Cc: Ingo Molnar <[email protected]>
Signed-off-by: Xunlei Pang <[email protected]>
[jstultz: Minor commit message tweak suggested by Ingo]
Signed-off-by: John Stultz <[email protected]>