DOC/BENCH: Remove poetry from benchmarking documentation

Author: Kai-Striega

doc/source/dev/running_the_benchmarks.md

@@ -2,22 +2,12 @@
 
 This document outlines how to setup and run the benchmarks using [asv](https://asv.readthedocs.io/en/v0.6.1/).
 
-## Installing asv
-
-`asv` can be installed with poetry via the `bench` group to install the bench group run:
-
-```shell
-poetry install --with=bench
-```
-
-This will install ``asv`` into your poetry environment.
-
 ## Running the benchmarks
 
 To run the benchmarks with ``asv``, simply enter:
 
 ```shell
-poetry run asv run
+asv run
 ```
 
 ## Viewing the results
@@ -27,13 +17,13 @@ There are two steps to viewing the results locally. The results need to be publi
 To publish the results use:
 
 ```shell
-poetry run asv publish
+asv publish
 ```
 
 And then to view the results:
 
 ```shell
-poetry run asv preview
+asv preview
 ```
 
 This will launch a local web browser from which you can view the results
@@ -43,7 +33,7 @@ This will launch a local web browser from which you can view the results
 One common use case is to use ``asv`` in development, there are several useful flags that should be used:
 
 ```shell
-poetry run asv --python=same --quick --dry-run
+asv --python=same --quick --dry-run
 ```
 
 We are adding three flags, these flags are: