fix: fix 'simplifiable-if-expression' for pylint

.pylintrc

@@ -11,7 +11,6 @@ disable=fixme,
         missing-function-docstring,
         missing-module-docstring,
         no-member,
-        simplifiable-if-expression,
         singleton-comparison,
         super-init-not-called,
         too-many-locals,

src/wuttaweb/forms/base.py

@@ -1125,7 +1125,7 @@ class Form:  # pylint: disable=too-many-instance-attributes,too-many-public-meth
             # for now we explicitly translate here, ugh.  also
             # note this does not yet allow for null values.. :(
             if isinstance(field.typ, colander.Boolean):
-                value = True if value == field.typ.true_val else False
+                value = value == field.typ.true_val
 
             model_data[field.oid] = make_json_safe(value)