rename travis-fuzz.sh to fuzz.sh; partially patch CI

.github/workflows/fuzz.yml

@@ -34,7 +34,7 @@ jobs:
           override: true
           profile: minimal
       - name: fuzz
-        run: cd bitcoin/fuzz && ./travis-fuzz.sh "${{ matrix.fuzz_target }}"
+        run: cd fuzz && ./fuzz.sh "${{ matrix.fuzz_target }}"
       - run: echo "${{ matrix.fuzz_target }}.rs" >executed_${{ matrix.fuzz_target }}
       - uses: actions/upload-artifact@v2
         with:
@@ -51,5 +51,5 @@ jobs:
       - name: Display structure of downloaded files
         run: ls -R
       - run: find executed_* -type f -exec cat {} + | sort > executed
-      - run: ls bitcoin/fuzz/fuzz_targets | sort > expected
+      - run: ls fuzz/fuzz_targets | sort > expected
       - run: diff expected executed

bitcoin/contrib/test.sh

@@ -108,16 +108,6 @@ if [ "$DO_DOCS" = true ]; then
     RUSTDOCFLAGS="-D warnings" cargo +stable doc --all-features
 fi
 
-# Fuzz if told to
-if [ "$DO_FUZZ" = true ]
-then
-    (
-        cd fuzz
-        cargo test --verbose
-        ./travis-fuzz.sh
-    )
-fi
-
 # Run formatter if told to.
 if [ "$DO_FMT" = true ]; then
     if [ "$NIGHTLY" = false ]; then