build/pkgs/setuptools, build/pkgs/pip: Remove python2 support from de…

…pendencies, install scripts

build/pkgs/pip/spkg-install.in

@@ -8,12 +8,7 @@ export PYTHONPATH="$(pwd)/src"
 # need to use --upgrade or --ignore-installed; Otherwise pip, which is
 # importing itself, will think itself is already installed
 #
-if [ "$SAGE_PYTHON3" = "yes" ]; then
-    versions="3"
-else
-    # Install pip3 first so pip2 overwrites local/bin/pip
-    versions="3 2"
-fi
+versions=3
 
 for vers in $versions; do
     python${vers} -m pip install --verbose --no-index --ignore-installed \

build/pkgs/setuptools/dependencies

@@ -1,4 +1,4 @@
-$(PYTHON) python3
+$(PYTHON)
 
 ----------
 All lines of this file are ignored except the first.

build/pkgs/setuptools/spkg-install.in

@@ -9,11 +9,7 @@ export PYTHON_EGG_CACHE="$DOT_SAGE/.python-eggs"
 
 cd src
 
-if [ "$SAGE_PYTHON3" = "yes" ]; then
-    versions="3"
-else
-    versions="2 3"
-fi
+versions=3
 
 # Prevent setuptools from installing itself with easy_install
 for vers in $versions; do