remove binary from repository

.gitignore

diff --git a/.gitignore b/.gitignore
index 2f33739..8f5b596 100644
--- a/.gitignore
+++ b/.gitignore
@@ -13,3 +13,4 @@
 _test
 _testmain.go
 protoc-gen-go/testdata/multi/*.pb.go
+_conformance/_conformance

_conformance/_conformance

diff --git a/_conformance/_conformance b/_conformance/_conformance
deleted file mode 100755
index 169ef34..0000000
--- a/_conformance/_conformance
+++ /dev/null
Binary files differ