OvmfPkg: AcpiPlatformDxe: remove current ACPI table loader

OvmfPkg: AcpiPlatformDxe: remove current ACPI table loader

In the next patch we rewrite the client code for QEMU's fw_cfg ACPI table
loader interface. In order to avoid randomly intermixed hunks in that
patch, first remove the old code cleanly.

We remove the InstallQemuLinkedTables() function and empty the
InstallAllQemuLinkedTables() function. We also remove CheckRsdp().

InstallAllQemuLinkedTables() will return constant EFI_NOT_FOUND to
AcpiPlatformEntryPoint(), causing the latter to proceed to OVMF's builtin
tables.

This way the history remains bisectable and the new client gets a clean
start in the next patch.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16157 6f19259b-4bc3-4df7-8a09-765794883524