crimson/common: remove unused file .#log.cc

Signed-off-by: Changcheng Liu <changcheng.liu@aliyun.com>

diff --git a/src/crimson/common/.#log.cc b/src/crimson/common/.#log.cc
deleted file mode 120000 (symlink)
index d141a2a..0000000
--- a/src/crimson/common/.#log.cc
+++ /dev/null
@@ -1 +0,0 @@
-sam@pondermatic.4162:1552956455
\ No newline at end of file