cmake: do not install rnndb/.gitignore
cmake: do not install rnndb/.gitignore

MoochMcGee/envytools,karolherbst/envytools,hakzsam/envytools,grate-driver/envytools,kfractal/envytools,MoochMcGee/envytools,pierremoreau/envytools,karolherbst/envytools,envytools/envytools,pierremoreau/envytools,pierremoreau/envytools,hakzsam/envytools,karolherbst/envytools,grate-driver/envytools,MoochMcGee/envytools,envytools/envytools,karolherbst/envytools,kfractal/envytools,pierremoreau/envytools,hakzsam/envytools,kfractal/envytools,envytools/envytools,karolherbst/envytools,hakzsam/envytools,MoochMcGee/envytools,grate-driver/envytools,grate-driver/envytools,grate-driver/envytools,MoochMcGee/envytools,envytools/envytools,pierremoreau/envytools,hakzsam/envytools,kfractal/envytools,kfractal/envytools,envytools/envytools