Update run_pipeline.md : remove conda options to run the pipeline (deprecated)

docs/source/run_pipeline.md

@@ -39,14 +39,6 @@ You can use a custom [cluster.json](https://forgemia.inra.fr/umr-gdec/magatt/-/b
 $ snakemake -j 32 --cluster-config cluster-hpc2.json --cluster "sbatch -J {cluster.jobName} -c {cluster.c} --mem {cluster.mem} -e {cluster.error} -o {cluster.output} -p gdec" --verbose"
 ```
 
-## Use Conda environment
-
-The pipeline comes with conda environment file which can be used by Snakemake. To enable the use of conda:
-
-```console
-$ snakemake --use-conda -j 8 --cluster-config cluster-hpc2.json --cluster "sbatch -p {cluster.partition} -c {cluster.c} -N 1 -t {cluster.time} -J {cluster.jobName} --mem={cluster.mem} -e {cluster.error} -o {cluster.output}" 
-```
-
 It is possible to force Snakemake to wait for a defined amount of time in case of latency on the filesystem of your cluster/server.
 
 ```console