dont install poppler, we do this with another buildpack now.

bin/compile

@@ -163,12 +163,6 @@ package_download "nodejs" "${NODE_VERSION}" "${VENDORED_NODE}"
 package_download "npm" "${NPM_VERSION}" "${VENDORED_NPM}"
 package_download "scons" "${SCONS_VERSION}" "${VENDORED_SCONS}"
 
-# vendor poppler into the slug
-echo "-----> Vendoring poppler into slug"
-VENDORED_POPPLER="$BUILD_DIR/poppler"
-mkdir -p "$VENDORED_POPPLER"
-curl https://s3.amazonaws.com/circuithub-build/poppler-0.20.5.tar.gz -s -o - | tar xzf - -C ${VENDORED_POPPLER} 
-
 # vendor node into the slug
 PATH="$BUILD_DIR/bin:$PATH"
 echo "-----> Vendoring node into slug"