Revert "install from branch"

This reverts commit bc0757d.

Author: blink1073

.evergreen/prepare-shell.sh

@@ -32,7 +32,7 @@ export PATH="$MONGODB_BINARIES:$PATH"
 
 if [ ! -d "$DRIVERS_TOOLS" ]; then
   # Only clone driver tools if it does not exist
-  git clone --depth=1 --branch DRIVERS-3019-py38 "https://github.com/blink1073/drivers-evergreen-tools.git" "${DRIVERS_TOOLS}"
+  git clone --depth=1 "https://github.com/mongodb-labs/drivers-evergreen-tools.git" "${DRIVERS_TOOLS}"
 fi
 
 echo "installed DRIVERS_TOOLS from commit $(git -C "${DRIVERS_TOOLS}" rev-parse HEAD)"