diff --git a/2021/libsrc/bits.o b/2021/libsrc/bits.o
deleted file mode 100644
index 0375e26..0000000
Binary files a/2021/libsrc/bits.o and /dev/null differ
diff --git a/2021/libsrc/debug.o b/2021/libsrc/debug.o
deleted file mode 100644
index d9b290f..0000000
Binary files a/2021/libsrc/debug.o and /dev/null differ
diff --git a/2021/libsrc/pool.o b/2021/libsrc/pool.o
deleted file mode 100644
index 3baa4a4..0000000
Binary files a/2021/libsrc/pool.o and /dev/null differ