Remove aggrcon files for no longer participating projects

cft
  project lead withdrew project from simrel:  
  https://www.eclipse.org/lists/cross-project-issues-dev/msg17808.html
emf-diffmerge
  project lead withdrew project from simrel: 
  https://www.eclipse.org/lists/cross-project-issues-dev/msg17434.html
ldt
  project inactive:
  https://www.eclipse.org/lists/cross-project-issues-dev/msg17469.html
jwt
  project inactive:
  https://www.eclipse.org/lists/cross-project-issues-dev/msg17469.html

Change-Id: I5971d35312895f6cec277a949ebf60fd21599e92
5 files changed