ci/vkd3d: drop the "clear results folder without deleting the folder" logic

I might be wrong about this one, but I don't see what it could be for.

We don't want to delete too much either, in case this script gets called
in the same job as another test suite.

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/29749>

.gitlab-ci/vkd3d-proton/run.sh

@@ -1,5 +1,4 @@
 #!/usr/bin/env bash
-# shellcheck disable=SC2035 # FIXME glob
 
 set -ex
 
@@ -11,6 +10,9 @@ INSTALL=$(realpath -s "$PWD"/install)
 
 RESULTS=$(realpath -s "$PWD"/results)
 
+# Make sure the results folder exists
+mkdir -p "$RESULTS"
+
 # Set up the driver environment.
 # Modifiying here directly LD_LIBRARY_PATH may cause problems when
 # using a command wrapper. Hence, we will just set it when running the
@@ -42,12 +44,6 @@ if ! vulkaninfo | grep driverInfo | tee /tmp/version.txt | grep -F "Mesa $MESA_V
     exit 1
 fi
 
-if [ -d "$RESULTS" ]; then
-    cd "$RESULTS" && rm -rf ..?* .[!.]* * && cd -
-else
-    mkdir "$RESULTS"
-fi
-
 quiet printf "%s\n" "Running vkd3d-proton testsuite..."
 
 if ! /vkd3d-proton-tests/x64/bin/d3d12 > "$RESULTS/vkd3d-proton-log.txt"; then