Remove Buck entries from .gitignore

Change-Id: I51a0dc248df1acafbaa667385d6bfd58a16ecea3

.gitignore

diff --git a/.gitignore b/.gitignore
index f90bb5f..3cc25c0 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,8 +1,3 @@
-/.buckd
-/.buckversion
 /.classpath
 /.project
-/.watchmanconfig
-/buck-out/
-/bucklets
 /eclipse-out