Remove CUDA feature (#6094)

net/remote/remote-node.sh

@@ -93,15 +93,12 @@ local|tar|skip)
   export USE_INSTALL=1
 
   ./fetch-perf-libs.sh
-  # shellcheck source=/dev/null
-  source ./target/perf-libs/env.sh
 
 cat >> ~/solana/on-reboot <<EOF
   PATH="$HOME"/.cargo/bin:"$PATH"
   export USE_INSTALL=1
 
   # shellcheck source=/dev/null
-  source ./target/perf-libs/env.sh
   SUDO_OK=1 source scripts/tune-system.sh
 
   (
@@ -113,7 +110,7 @@ cat >> ~/solana/on-reboot <<EOF
   scripts/net-stats.sh  > net-stats.log 2>&1 &
   echo \$! > net-stats.pid
 
-  if [[ -e /dev/nvidia0 && -x ~/.cargo/bin/solana-validator-cuda ]]; then
+  if [[ -e /dev/nvidia0 ]]; then
     echo Selecting solana-validator-cuda
     export SOLANA_CUDA=1
   fi