Don't remove and recreate build dir in test driver script

Author: azonenberg

test-scripts/test-driver-debian.sh

@@ -2,6 +2,4 @@
 sudo apt -y update
 sudo apt -y full-upgrade
 sudo apt -y install build-essential git cmake pkgconf libgtk-3-dev libsigc++-2.0-dev libyaml-cpp-dev catch2 libglfw3-dev curl xzip libhidapi-dev lsb-release dpkg-dev file libvulkan-dev glslang-dev glslang-tools spirv-tools glslc liblxi-dev libtirpc-dev texlive texlive-fonts-extra texlive-extra-utils
-rm -rf build
-mkdir build
 ctest -S ctest-custom.cmake