Stop disabling unit tests in cmake

Author: piki

build.sh

@@ -25,7 +25,6 @@ cmake \
   -DWITH_INNODB_MEMCACHED=1 \
   -DWITH_MECAB=system \
   -DWITH_NUMA=ON \
-  -DWITH_UNIT_TESTS=OFF \
   .. && \
 make -j $(nproc) && \
 make test ARGS="-j $(nproc)" && \