Remove undesirable .project file

These file were push by mistak in the same CL as the whole project.
Any editing with IDE is updating them and they appear in the updated
change to be add to git, even when ignored (since they are already
present in the tree).

Test: No-op change
Bug: 262605980
Change-Id: I671d4538c6df55d1856aa9e9c89d8fe758e3a1db