test-crypto: Silence the "creating bytebuffer..." debug

Author: https://github.com/alimpfard
Commit: https://github.com/SerenityOS/serenity/commit/2cc867bcbaf
Pull-request: https://github.com/SerenityOS/serenity/pull/4067

Userland/test-crypto.cpp

@@ -534,7 +534,6 @@ auto main(int argc, char** argv) -> int
 
 static ByteBuffer operator""_b(const char* string, size_t length)
 {
-    dbg() << "Create byte buffer of size " << length;
     return ByteBuffer::copy(string, length);
 }