bitcoin-core: Fix build after cryptofuzz removal (google#12765)

Fixes https://issues.oss-fuzz.com/issues/380676570

Excerpt:

```
Step #1: Step 5/13 : RUN git clone --depth 1 https://github.com/guidovranken/cryptofuzz
Step #1:  ---> Running in def8cd621b2d
Step #1: �[91mCloning into 'cryptofuzz'...
Step #1: �[0m�[91mfatal: could not read Username for 'https://github.com': No such device or address
Step #1: The command '/bin/sh -c git clone --depth 1 https://github.com/guidovranken/cryptofuzz' returned a non-zero code: 128
Finished Step #1
ERROR
```

This is a clean removal, which can be reverted in the future, or
reworked.

For now, go ahead with the removal, to unbreak the build.

Co-authored-by: MarcoFalke <[email protected]>

Author: maflcko

projects/bitcoin-core/Dockerfile

@@ -26,12 +26,6 @@ RUN apt-get update && apt-get install -y \
 RUN git clone --depth=1 https://github.com/bitcoin/bitcoin.git bitcoin-core
 RUN git clone --depth=1 https://github.com/bitcoin-core/qa-assets bitcoin-core/assets && \
   rm -rf bitcoin-core/assets/.git  # Remove git history to save storage
-RUN git clone --depth 1 https://github.com/guidovranken/cryptofuzz
 RUN git clone --depth 1 https://github.com/bitcoin-core/secp256k1.git
-RUN git clone --depth 1 https://github.com/randombit/botan.git
-RUN git clone --depth 1 https://github.com/trezor/trezor-firmware.git
-RUN git clone --depth 1 https://github.com/google/wycheproof.git
-RUN wget https://archives.boost.io/release/1.84.0/source/boost_1_84_0.tar.bz2
 WORKDIR bitcoin-core
 COPY build.sh $SRC/
-COPY build_cryptofuzz.sh $SRC/

projects/bitcoin-core/build.sh

@@ -18,11 +18,6 @@
 # Print date to embed it into build logs
 date
 
-if [ "$SANITIZER" != "introspector" ]; then
-  # Temporarily skip this under introspector
-  $SRC/build_cryptofuzz.sh
-fi
-
 cd $SRC/bitcoin-core/
 
 # Build dependencies