Delete the deprecated identifier macro

resolves #669

Author: miles170

CHANGELOG.md

@@ -13,6 +13,9 @@
 ## New features
 - New feature to omit the `source_column_name` column on the `union_relations` macro ([#331](https://github.com/dbt-labs/dbt-utils/issues/331), [#624](https://github.com/dbt-labs/dbt-utils/pull/624))
 
+## Under the hood
+- Delete the deprecated identifier macro ([#672](https://github.com/dbt-labs/dbt-utils/pull/672)
+
 ## Fixes
 - Better handling of whitespaces in the star macro ([#651](https://github.com/dbt-labs/dbt-utils/pull/651))
 - Fix to correct behavior in `mutually_exclusive_ranges` test in certain situations when `zero_length_range_allowed: true` and multiple ranges in a partition have the same value for `lower_bound_column`. ([[#659](https://github.com/dbt-labs/dbt-utils/issues/659)], [#660](https://github.com/dbt-labs/dbt-utils/pull/660))
@@ -21,6 +24,7 @@
 - [@christineberger](https://github.com/christineberger) (#624)
 - [@courentin](https://github.com/courentin) (#651)
 - [@sfc-gh-ancoleman](https://github.com/sfc-gh-ancoleman) (#660)
+- [@miles170](https://github.com/miles170) (#672)
 
 # dbt-utils v0.8.6