removed offending mapkeeper module so that maven will build
removed offending mapkeeper module so that maven will build

zyguan/ycsb,jaemyoun/YCSB,cricket007/YCSB,leschekhomann/YCSB,madhurihn/YCSB_ToyDB,ChristianNavolskyi/YCSB,manolama/YCSB,ChristianNavolskyi/YCSB,ChristianNavolskyi/YCSB,brianfrankcooper/YCSB,zyguan/ycsb,madhurihn/YCSB_ToyDB,cricket007/YCSB,jaemyoun/YCSB,leschekhomann/YCSB,brianfrankcooper/YCSB,madhurihn/YCSB_ToyDB,zyguan/ycsb,brianfrankcooper/YCSB,jaemyoun/YCSB,leschekhomann/YCSB,cricket007/YCSB,brianfrankcooper/YCSB,manolama/YCSB,manolama/YCSB,manolama/YCSB,leschekhomann/YCSB,cricket007/YCSB,madhurihn/YCSB_ToyDB,ChristianNavolskyi/YCSB,jaemyoun/YCSB,zyguan/ycsb