ACPICA: Revert "Headers: Deploy #pragma pack (push) and (pop)."

This reverts commit aae576e5faefa8ba70647efa320d4747b6375f1e.
Push and Pop are not portable "enough", and caused problems for
some ACPICA customers.

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

drivers/acpi/acpica/acinterp.h

@@ -44,8 +44,6 @@
 #ifndef __ACINTERP_H__
 #define __ACINTERP_H__
 
-#pragma pack(push)		/* Set default struct packing */
-
 #define ACPI_WALK_OPERANDS          (&(walk_state->operands [walk_state->num_operands -1]))
 
 /* Macros for tables used for debug output */
@@ -537,6 +535,4 @@ acpi_ex_data_table_space_handler(u32 function,
 				 u64 *value,
 				 void *handler_context, void *region_context);
 
-#pragma pack(pop)		/* Restore original struct packing */
-
 #endif				/* __INTERP_H__ */