fuzz: fold fuzz-util.sh into generate-bins.sh

diff --git a/fuzz/fuzz-util.sh b/fuzz/fuzz-util.sh
deleted file mode 100755
index 5b63de9c..00000000
--- a/fuzz/fuzz-util.sh
+++ /dev/null
@@ -1,45 +0,0 @@
-#!/usr/bin/env bash
-
-# Sort order is affected by locale. See `man sort`.
-# > Set LC_ALL=C to get the traditional sort order that uses native byte values.
-export LC_ALL=C
-
-REPO_DIR=$(git rev-parse --show-toplevel)
-
-listTargetFiles() {
-  pushd "$REPO_DIR/fuzz" > /dev/null || exit 1
-  find fuzz_targets/ -type f -name "*.rs" | sort
-  popd > /dev/null || exit 1
-}
-
-targetFileToName() {
-  echo "$1" \
-    | sed 's/^fuzz_targets\///' \
-    | sed 's/\.rs$//' \
-    | sed 's/\//_/g' \
-    | sed 's/^_//g'
-}
-
-# Utility function to avoid CI failures on Windows
-checkWindowsFiles() {
-  incorrectFilenames=$(find . -type f -name "*,*" -o -name "*:*" -o -name "*<*" -o -name "*>*" -o -name "*|*" -o -name "*\?*" -o -name "*\**" -o -name "*\"*" | wc -l)
-  if [ "$incorrectFilenames" -gt 0 ]; then
-    echo "Bailing early because there is a Windows-incompatible filename in the tree."
-    exit 2
-  fi
-}
-
-# Checks whether a fuzz case has artifacts, and dumps them in hex
-checkReport() {
-  artifactDir="fuzz/artifacts/$1"
-  if [ -d "$artifactDir" ] && [ -n "$(ls -A "$artifactDir" 2>/dev/null)" ]; then
-    echo "Artifacts found for target: $1"
-    for artifact in "$artifactDir"/*; do
-      if [ -f "$artifact" ]; then
-        echo "Artifact: $(basename "$artifact")"
-        xxd -p -c10000 < "$artifact"
-      fi
-    done
-    exit 1
-  fi
-}
diff --git a/fuzz/generate-bins.sh b/fuzz/generate-bins.sh
index 96210345..3bb95f2f 100755
--- a/fuzz/generate-bins.sh
+++ b/fuzz/generate-bins.sh
@@ -7,9 +7,27 @@ set -euo pipefail
 
 REPO_DIR=$(git rev-parse --show-toplevel)
 
-# can't find the file because of the ENV var
-# shellcheck source=/dev/null
-source "$REPO_DIR/fuzz/fuzz-util.sh"
+# Sort order is affected by locale. See `man sort`.
+# > Set LC_ALL=C to get the traditional sort order that uses native byte values.
+export LC_ALL=C
+
+# List all fuzz target files.
+listTargetFiles() {
+  pushd "$REPO_DIR/fuzz" > /dev/null || exit 1
+  find fuzz_targets/ -type f -name "*.rs" | sort
+  popd > /dev/null || exit 1
+}
+
+# Convert fuzz target file path to target name
+# Example: fuzz_targets/bitcoin/deserialize_block.rs -> bitcoin_deserialize_block
+targetFileToName() {
+  echo "$1" \
+    | sed 's/^fuzz_targets\///' \
+    | sed 's/\.rs$//' \
+    | sed 's/\//_/g' \
+    | sed 's/^_//g'
+}
+
 source "$REPO_DIR/fuzz/generate-encoding-roundtrip.sh"
 
 CARGO_TOML="$REPO_DIR/fuzz/Cargo.toml"