Remove LD_LIBRARY_PATH to try fix "found unexpected dependencies" in the :grpc-compiler:checkArtifacts step

Author: kannanjgithub

buildscripts/kokoro/unix.sh

@@ -53,7 +53,6 @@ export GRADLE_OPTS="-Dorg.gradle.jvmargs='-Xmx1g'"
 # Make protobuf discoverable by :grpc-compiler
 export LDFLAGS="$(PKG_CONFIG_PATH=/tmp/protobuf/lib/pkgconfig pkg-config --libs protobuf)"
 export CXXFLAGS="$(PKG_CONFIG_PATH=/tmp/protobuf/lib/pkgconfig pkg-config --cflags protobuf)"
-export LD_LIBRARY_PATH=/tmp/protobuf/lib
 export LIBRARY_PATH=/tmp/protobuf/lib
 
 ./gradlew grpc-compiler:clean $GRADLE_FLAGS