Remove .swp file checked in by accident.

Change-Id: I612ff98d53f46abfc6cb51a820ecde2820442940
diff --git a/core/.main.mk.swp b/core/.main.mk.swp
deleted file mode 100644
index a044e50..0000000
--- a/core/.main.mk.swp
+++ /dev/null
Binary files differ