Remove mafft installed by bioperl

for_tests/Dockerfile

@@ -50,6 +50,7 @@ RUN apt-get install -y cmake &&\
 
 
 # Install mafft 7.313
+RUN rm /usr/bin/mafft  # remove mafft installed with bioperl
 WORKDIR /tmp
 RUN wget https://mafft.cbrc.jp/alignment/software/mafft-7.313-with-extensions-src.tgz &&\
     tar xf mafft-7.313-with-extensions-src.tgz &&\