ACPI / osl: Remove deprecated acpi_get_table_with_size()/early_acpi_os_unmap_memory()

Since all users are cleaned up, remove the 2 deprecated APIs due to no
users.
As a Linux variable rather than an ACPICA variable, acpi_gbl_permanent_mmap
is renamed to acpi_permanent_mmap to have a consistent coding style across
entire Linux ACPI subsystem.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

include/acpi/acpixf.h

@@ -967,19 +967,6 @@ void acpi_terminate_debugger(void);
 /*
  * Divergences
  */
-ACPI_GLOBAL(u8, acpi_gbl_permanent_mmap);
-
-ACPI_EXTERNAL_RETURN_STATUS(acpi_status
-			    acpi_get_table_with_size(acpi_string signature,
-						     u32 instance,
-						     struct acpi_table_header
-						     **out_table,
-						     acpi_size *tbl_size))
-
-ACPI_EXTERNAL_RETURN_VOID(void
-			  early_acpi_os_unmap_memory(void __iomem * virt,
-						     acpi_size size))
-
 ACPI_EXTERNAL_RETURN_STATUS(acpi_status
 			    acpi_get_data_full(acpi_handle object,
 					       acpi_object_handler handler,