chore(java): Remove redundant code

[LiangliangSui]

What does this PR do?

Related issues

Does this PR introduce any user-facing change?

• Does this PR introduce any public API change?
• Does this PR introduce any binary protocol compatibility change?

Benchmark

[chaokunyang]

Manually inline have better performance. JVM JIT nto always inline those calls

[LiangliangSui]

Does readNullable also need to be manually inline?

fory/java/fory-core/src/main/java/org/apache/fory/serializer/SerializationBinding.java

Lines 381 to 384 in a9e5d99

	@Override
	public Object readNullable(MemoryBuffer buffer, Serializer<Object> serializer) {
	return fory.xreadNullable(buffer, serializer);
	}

[chaokunyang]

Does readNullable also need to be manually inline?

fory/java/fory-core/src/main/java/org/apache/fory/serializer/SerializationBinding.java

Lines 381 to 384 in a9e5d99

	@Override
	public Object readNullable(MemoryBuffer buffer, Serializer<Object> serializer) {
	return fory.xreadNullable(buffer, serializer);
	}

Yes, we'd better do that