Move benchmark workflow out of main tox action into codspeed

Let's see how this goes

.github/workflows/codspeed.yml

@@ -0,0 +1,19 @@
+name: codspeed-benchmarks
+
+on:
+  push:
+    branches:
+      - "main"
+  pull_request:
+  workflow_dispatch:
+
+jobs:
+  benchmarks:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Run benchmarks
+        uses: CodspeedHQ/action@v2
+        with:
+          token: ${{ secrets.CODSPEED_TOKEN }}
+          run: "pytest -vvv -r fEs --pyargs dkist -k test_benchmarks --benchmark-autosave"

.github/workflows/main.yml

@@ -42,7 +42,6 @@ jobs:
         - windows: py311-online
         - macos: py310
         - linux: py310-oldestdeps
-        - linux: benchmarks
     secrets:
       CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
 

tox.ini

@@ -90,17 +90,3 @@ commands =
     !notebooks: sphinx-build -j 1 --color -W --keep-going -b html -d _build/.doctrees . _build/html -D nb_execution_mode=off {posargs}
     notebooks: sphinx-build -j 1 --color -W --keep-going -b html -d _build/.doctrees . _build/html {posargs}
     python -c 'import pathlib; print("Documentation available under file://\{0\}".format(pathlib.Path(r"{toxinidir}") / "docs" / "_build" / "index.html"))'
-
-[testenv:benchmarks]
-description = Run benchmarks on PR and compare against main to ensure there are no performance regressions
-allowlist_externals=git
-commands =
-    git clone https://github.com/DKISTDC/dkist-benchmarks.git {env_tmp_dir}/dkist-benchmarks
-    {env:PYTEST_COMMAND} -k test_benchmarks --benchmark-autosave --benchmark-compare={env_tmp_dir}/dkist-benchmarks/main.json --benchmark-compare-fail=mean:5%
-
-[testenv:benchmark-main]
-description = Run benchmarks on main to keep comparison data up to date
-allowlist_externals = git,cp
-commands =
-    {env:PYTEST_COMMAND} -k test_benchmarks --benchmark-save=main
-    cp {toxinidir}/.tmp/benchmark-main/.benchmarks/Linux-CPython-3.10-64bit/0001_main.json /github/main.json