docs: remove the need for special scripts

* import version from pytest since it is importable
* remove makefile bits from legacy hosting
* remove the script to determine the version for legacy hosting

doc/en/Makefile

@@ -19,7 +19,6 @@ REGENDOC_ARGS := \
 	--normalize "@/tmp/pytest-of-.*/pytest-\d+@PYTEST_TMPDIR@" \
 
 
-
 .PHONY: help clean html dirhtml singlehtml pickle json htmlhelp qthelp devhelp epub latex latexpdf text man changes linkcheck doctest
 
 
@@ -36,22 +35,6 @@ help:
 clean:
 	-rm -rf $(BUILDDIR)/*
 
-SITETARGET=$(shell ./_getdoctarget.py)
-
-showtarget:
-	@echo $(SITETARGET)
-
-install: html
-	 # for access talk to someone with login rights to
-	 # pytest-dev@pytest.org to add your ssh key
-	 rsync -avz _build/html/ pytest-dev@pytest.org:pytest.org/$(SITETARGET)
-
-installpdf: latexpdf
-	@scp $(BUILDDIR)/latex/pytest.pdf pytest-dev@pytest.org:pytest.org/$(SITETARGET)
-
-installall: clean install installpdf
-	@echo "done"
-
 regen:
 	PYTHONDONTWRITEBYTECODE=1 COLUMNS=76 regendoc --update *.rst */*.rst ${REGENDOC_ARGS}
 

doc/en/conf.py

@@ -19,11 +19,8 @@
 # The short X.Y version.
 
 import os, sys
-sys.path.insert(0, os.path.dirname(__file__))
-import _getdoctarget
-
-version = _getdoctarget.get_minor_version_string()
-release = _getdoctarget.get_version_string()
+from _pytest import __version__ as version
+release = ".".join(version.split(".")[:2])
 
 # If extensions (or modules to document with autodoc) are in another directory,
 # add these directories to sys.path here. If the directory is relative to the