[GIS] Deleting features with identical table attributes in QGIS

Question

How do I delete features with identical table attributes in QGIS? Otherwise, is there a tool like the 'Delete Identical Tool' in ArcGIS?

For example, if I had 4 rows, and 3 columns, where I wanted to delete identical features based on 2 columns:

id	value 1	value 2
1	A	m
2	A	m
3	A	p
4	B	m

I want it to be reduced to only 1 feature for each identical set of attributes:

id	value 1	value 2
1	A	m
3	A	p
4	B	m

In ArcGIS Desktop, this is a simple tool shown below called 'Delete Identical', where I can select one or more columns at the same time. I use this tool all the time, am switching to QGIS.

Answer 1

For future reference: the next version of QGIS (3.6) includes a built-in 'Delete duplicates by attribute' tool which does exactly this.