x86/microcode/intel: Remove redundant microcode late updated message

After successful update, the late loading routine prints an update
summary similar to:

  microcode: load: updated on 128 primary CPUs with 128 siblings
  microcode: revision: 0x21000170 -> 0x21000190

Remove the redundant message in the Intel side of the driver.

  [ bp: Massage commit message. ]

Signed-off-by: Ashok Raj <ashok.raj@intel.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://lore.kernel.org/r/ZWjYhedNfhAUmt0k@a4bf019067fa.jf.intel.com