Fix broken download_thirdparty script.
diff --git a/thirdparty/download_thirdparty.sh b/thirdparty/download_thirdparty.sh
index 8e68aa6..9144ac4 100755
--- a/thirdparty/download_thirdparty.sh
+++ b/thirdparty/download_thirdparty.sh
@@ -15,12 +15,3 @@
   rm snappy-${SNAPPY_VERSION}.tar.gz
 fi
 
-if [ ! -d snappy-${LZ4_VERSION} ]; then
-  echo "Fetching lz4"
-  wget https://github.com/Cyan4973/lz4/archive/${LZ4_VERSION}.tar.gz
-  mv ${LZ4_VERSION}.tar.gz lz4-${LZ4_VERSION}.tar.gz
-  tar xvzf lz4-${LZ4_VERSION}.tar.gz
-  rm lz4-${LZ4_VERSION}.tar.gz
-fi
-
-