CoffeelakeSiliconPkg: Remove PCH SPI PPI and Protocol from package

REF:https://bugzilla.tianocore.org/show_bug.cgi?id=3307



The following PPI and Protocols have moved to IntelSiliconPkg. The
remaining definitions in CoffeelakeSiliconPkg are removed and libs/
modules that need to reference IntelSiliconPkg are updated.

 1. gPchSpiProtocolGuid
 2. gPchSmmSpiProtocolGuid
 3. gPchSpiPpiGuid

Cc: Chasel Chiu <chasel.chiu@intel.com>
Cc: Sai Chaganty <rangasai.v.chaganty@intel.com>
Signed-off-by: Michael Kubacki <michael.kubacki@microsoft.com>
Reviewed-by: Nate DeSimone <nathaniel.l.desimone@intel.com>
Reviewed-by: Chasel Chiu <chasel.chiu@intel.com>