fix(bb): remove blake-opt from git (#18822)

It was being generated and creating noise

Author: ludamad

barretenberg/sol/scripts/sync_blake_opt_vk.sh

@@ -9,17 +9,21 @@ set -e
 SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
 VK_FILE="$SCRIPT_DIR/../src/honk/keys/BlakeHonkVerificationKey.sol"
 OPT_FILE="$SCRIPT_DIR/../src/honk/optimised/blake-opt.sol"
+TEMPLATE_FILE="$SCRIPT_DIR/../src/honk/optimised/blake-opt.sol.template"
 
 if [ ! -f "$VK_FILE" ]; then
     echo "Error: VK file not found at $VK_FILE"
     exit 1
 fi
 
-if [ ! -f "$OPT_FILE" ]; then
-    echo "Error: blake-opt.sol not found at $OPT_FILE"
+if [ ! -f "$TEMPLATE_FILE" ]; then
+    echo "Error: blake-opt.sol.template not found at $TEMPLATE_FILE"
     exit 1
 fi
 
+# Always copy template to target
+cp "$TEMPLATE_FILE" "$OPT_FILE"
+
 # Function to extract x,y coordinates from VK file for a given field name
 extract_coords() {
     local field_name="$1"

barretenberg/sol/src/honk/optimised/.gitignore

@@ -0,0 +1,2 @@
+blake-opt.sol
+blake-opt.sol.bak