ignore delta

Signed-off-by: Robert Kruszewski <github@robertk.io>

Author: robert3005

vortex-test/compat-gen/src/fixtures/arrays/synthetic/encodings/mod.rs

@@ -37,7 +37,8 @@ pub fn fixtures() -> Vec<Box<dyn FlatLayoutFixture>> {
         Box::new(bytebool::ByteBoolFixture),
         Box::new(datetimeparts::DateTimePartsFixture),
         Box::new(decimal_byte_parts::DecimalBytePartsFixture),
-        Box::new(delta::DeltaFixture),
+        // Reenable this once delta is stable
+        // Box::new(delta::DeltaFixture),
         Box::new(dict::DictFixture),
         Box::new(fsst::FsstFixture),
         Box::new(for_::FoRFixture),