singularity: remove module as they are pulled from docker since 0.4.0

src/.singularity_modules/canu/1.6/canu.def

src/.singularity_modules/cutadapt/1.14/build.sh

src/.singularity_modules/cutadapt/1.14/cutadapt

src/.singularity_modules/cutadapt/1.14/cutadapt.def

src/.singularity_modules/cutadapt/1.15/build.sh

src/.singularity_modules/cutadapt/1.15/cutadapt

src/.singularity_modules/cutadapt/1.15/cutadapt.def

src/.singularity_modules/cutadapt/2.1/build.sh

src/.singularity_modules/cutadapt/2.1/cutadapt

src/.singularity_modules/cutadapt/2.1/cutadapt.def

src/.singularity_modules/deeptools/3.0.2/build.sh

src/.singularity_modules/deeptools/3.0.2/deeptools

src/.singularity_modules/deeptools/3.0.2/deeptools.def

src/.singularity_modules/deeptools/3.1.1/build.sh

src/.singularity_modules/deeptools/3.1.1/deeptools

src/.singularity_modules/deeptools/3.1.1/deeptools.def

src/.singularity_modules/docker_to_singularity.sh

src/.singularity_modules/fastp/0.19.7/build.sh

src/.singularity_modules/fastp/0.19.7/fastp

src/.singularity_modules/fastp/0.19.7/fastp.def