Fix requirements

README.md

@@ -17,7 +17,6 @@ All tools used by the workflow must be available in your PATH (can be loaded as
 - pindel >= 0.2.5b9
 - svtyper >= 0.1.4
 - samtools >= 1.4
-- sambamba (confirm?)
 - bedtools >= 2.26.0
 - bcftools >= 1.6
 - vcftools >= 0.1.11