fix(nccl-tests): use plain make instead of non-existent all_reduce_perf target

iso/builder/build-nccl-tests.sh

@@ -100,8 +100,7 @@ make MPI=0 \
     NVCC="$NVCC" \
     CUDA_HOME="$CUDA_HOME" \
     NCCL_HOME="$NCCL_INCLUDE_DIR/.." \
-    BUILDDIR="./build" \
-    all_reduce_perf
+    BUILDDIR="./build"
 
 [ -f "./build/all_reduce_perf" ] || { echo "ERROR: all_reduce_perf not found after build"; exit 1; }