Remove unused variable

python/local/ovms_module/ovms/mbxqio.py

@@ -196,7 +196,6 @@
         csz = ctypes.c_uint64(sz)
         if astctxt is None:
             c_ast_completion = zero64
-            ast_ctxt = None
             c_ast_param = zero64
         else:
             c_ast_completion = ctypes.c_uint64(ast.vms_ast_completion)
@@ -233,7 +232,6 @@
         iosb, buff = self._read(sz, qioflags, astctxt)
         return iosb, buff
 
-
     async def aread(self, sz: int, qioflags: int = 0) -> bytes:
         astctxt = ast.AstContext()
         iosb, buff = self._read(sz, qioflags=qioflags)
@@ -265,7 +263,6 @@
         iosb = iosbdef.IOSB_r_io_64()
         if astctxt is None:
             c_ast_completion = zero64
-            ast_ctxt = None
             c_ast_param = zero64
         else:
             c_ast_completion = ctypes.c_uint64(ast.vms_ast_completion)