Third-party dependencies update:
  Removed guava-18.0
diff --git a/third_party/guava/guava-18.0.jar b/third_party/guava/guava-18.0.jar
deleted file mode 100644
index 8f89e49..0000000
--- a/third_party/guava/guava-18.0.jar
+++ /dev/null
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