OvmfPkg/RiscVVirt/Sec: clean up ProcessLibraryConstructorList() decl

<Library/PeimEntryPoint.h> declares a bogus
ProcessLibraryConstructorList() for the OvmfPkg/RiscVVirt SEC module. Rely
on AutoGen for (properly) declaring ProcessLibraryConstructorList().
Remove the correct, but superfluous, declaration as well.

Build-tested with:

  build -a RISCV64 -b DEBUG -m OvmfPkg/RiscVVirt/Sec/SecMain.inf \
    -p OvmfPkg/RiscVVirt/RiscVVirtQemu.dsc -t GCC5

Cc: Andrei Warkentin <andrei.warkentin@intel.com>
Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Sunil V L <sunilvl@ventanamicro.com>
Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=990
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Message-Id: <20240305113843.68812-5-lersek@redhat.com>
Reviewed-by: Sunil V L <sunilvl@ventanamicro.com>
Reviewed-by: Jiewen Yao <Jiewen.yao@intel.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>

OvmfPkg/RiscVVirt/Sec/SecMain.h

@@ -49,18 +49,6 @@ SecStartup (
   IN  VOID   *DeviceTreeAddress
   );
 
-/**
-  Auto-generated function that calls the library constructors for all of the module's
-  dependent libraries.  This function must be called by the SEC Core once a stack has
-  been established.
-
-**/
-VOID
-EFIAPI
-ProcessLibraryConstructorList (
-  VOID
-  );
-
 /**
   Perform Platform PEIM initialization.