Docker: Remove popt from scaling test

tools/docker/scripts/install_scaling.sh

@@ -16,7 +16,7 @@ source /opt/cp2k-toolchain/install/setup
 
 # pre-build cp2k
 cd /workspace/cp2k
-for VERSION in 'popt' 'psmp' 'ssmp'; do
+for VERSION in 'psmp' 'ssmp'; do
    echo -n "Warming cache by trying to compile cp2k.${VERSION}... "
    if make -j VERSION="${VERSION}" &> /dev/null ; then
       echo 'done.'

tools/docker/scripts/test_scaling.sh

@@ -7,7 +7,7 @@ source /opt/cp2k-toolchain/install/setup
 
 echo -e '\n========== Compiling CP2K =========='
 cd /workspace/cp2k
-for VERSION in 'popt' 'psmp' 'ssmp' ; do
+for VERSION in 'psmp' 'ssmp' ; do
    echo -n "Compiling cp2k.${VERSION}... "
    if make -j VERSION="${VERSION}" &> /dev/null ; then
       echo 'done.'

tools/regtesting/test_scaling.py

@@ -36,7 +36,6 @@ def main():
         ref_energies.append(float(rest_args.pop(0)))
 
     configs = [
-        (8, 1, "popt"),
         (8, 1, "psmp"),
         (4, 2, "psmp"),
         (2, 4, "psmp"),