[BUG] Remove bwc code related to 1.0 and earlier version

[owaiskazi19]

What is the bug?

OpenSearch core removed opensearch-project/OpenSearch#5021 1x Version constants and because of which build is failing for AD Extension: https://github.com/opensearch-project/anomaly-detection/actions/runs/3415307724/jobs/5739978293

/home/runner/work/anomaly-detection/anomaly-detection/src/main/java/org/opensearch/ad/cluster/ADVersionUtil.java:47: error: cannot find symbol
        return adVersion != null && adVersion.onOrAfter(Version.V_1_1_0);
                                                               ^
  symbol:   variable V_1_1_0

> Task :compileJava
  location: class Version
/home/runner/work/anomaly-detection/anomaly-detection/src/main/java/org/opensearch/ad/util/Bwc.java:[30](https://github.com/opensearch-project/anomaly-detection/actions/runs/3415307724/jobs/5739978293#step:10:31): error: cannot find symbol
        return version.after(Version.V_1_0_0);
                                    ^
                          

What solution would you like?

This is inherited from Elasticsearch and Lucene. So version 1x is not compatible with 3.0. Hence, remove deprecated 1x code.

What alternatives have you considered?

A clear and concise description of any alternative solutions or features you've considered.

Do you have any additional context?

Add any other context or screenshots about the feature request here.