What can be the way of simplifying polygons in ArcMap? I have a shapefile with buildings and I have to make them as simple as it's possible. I used already some tools, like: dissolve, union, generalize, integrate and even buffer. I still have something like this to remove:

Small angle between buildings makes problems with mesh generation I want to do afterwards. Any ideas how to remove it massively for all objects? I know I can increase buffer distance, but maybe there is something which will not change geometry that much.
EDIT:
After using Simplify Polygon or Simplify Bulilding some areas are simplified (left side of picture) but not those I would be interested in:

And as an answer for the duplicate - my question is different, I don't want to delete overlapped lines, just remove holes which have very small angles.