ACPICA: Remove unused internal AML opcode.

ACPICA commit 3ec867764b079a98d8097d705c9f7b68270c04ec

This patch removes unused AML_INT_STATICSTRING_OP. Lv Zheng.

Link: https://github.com/acpica/acpica/commit/3ec86776


Signed-off-by: Bob 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>