Update .buildkite/nightly-benchmarks/scripts/run-performance-benchmarks.sh

Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>
Signed-off-by: Jakub Sochacki <97886316+jakub-sochacki@users.noreply.github.com>

Author: jakub-sochacki

.buildkite/nightly-benchmarks/scripts/run-performance-benchmarks.sh

@@ -147,7 +147,7 @@ kill_gpu_processes() {
       sleep 1
     done
   elif command -v hl-smi; then
-    while [ "$(hl-smi -q  | grep "Used" |  head -n 1 | awk -F ' ' '{print $3}')" -ge 1000 ]; do
+    while [ "$(hl-smi -q | grep "Used" | head -n 1 | awk '{print $3}')" -ge 1000 ]; do
       sleep 1
     done
   fi