Remove Buck based build

Change-Id: I90f1998f904bcc64921f77b0f078fe24be917c62

.gitignore

diff --git a/.gitignore b/.gitignore
index e42569d..c94e7d5 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,7 +3,4 @@
 .project
 .settings
 target
-/.buckd
-/buck-cache
-/buck-out
 *.iml

BUCK

diff --git a/BUCK b/BUCK
deleted file mode 100644
index a770d7d..0000000
--- a/BUCK
+++ /dev/null
@@ -1,8 +0,0 @@
-gerrit_plugin(
-  name = 'commit-message-length-validator',
-  srcs = glob(['src/main/java/**/*.java']),
-  resources = glob(['src/main/resources/**/*']),
-  manifest_entries = [
-    'Gerrit-PluginName: commit-message-length-validator',
-  ],
-)