[zcheri] Drop unused unaligned option from BuildCheriAllianceQEMU.

This is only used for MIPS.

Author: qwattash

pycheribuild/projects/build_qemu.py

@@ -584,8 +584,6 @@ class BuildCheriAllianceQEMU(BuildQEMUBase):
     native_install_dir = DefaultInstallDir.CHERI_ALLIANCE_SDK
     default_targets = "riscv64-softmmu,riscv64cheri-softmmu,riscv32-softmmu,riscv32cheri-softmmu,"
 
-    # Turn on unaligned loads/stores by default
-    unaligned = BoolConfigOption("unaligned", show_help=False, help="Permit un-aligned loads/stores", default=False)
     statistics = BoolConfigOption(
         "statistics",
         show_help=True,
@@ -609,8 +607,6 @@ def get_firmware_dir(cls, caller: SimpleProject, cross_target: "Optional[CrossCo
 
     def setup(self):
         super().setup()
-        if self.unaligned:
-            self.COMMON_FLAGS.append("-DCHERI_UNALIGNED")
         if self.statistics:
             self.COMMON_FLAGS.append("-DDO_CHERI_STATISTICS=1")
         if self.build_type == BuildType.DEBUG: