scripted-diff: remove Optional & nullopt

-BEGIN VERIFY SCRIPT-
git rm src/optional.h

sed -i -e 's/Optional</std::optional</g' $(git grep -l 'Optional<' src)

sed -i -e 's/{nullopt}/{std::nullopt}/g' $(git grep -l 'nullopt' src)
sed -i -e 's/ nullopt;/ std::nullopt;/g' $(git grep -l 'nullopt' src)
sed -i -e 's/ nullopt)/ std::nullopt)/g' $(git grep -l 'nullopt' src)
sed -i -e 's/(nullopt)/(std::nullopt)/g' $(git grep -l 'nullopt' src)
sed -i -e 's/ nullopt,/ std::nullopt,/g' $(git grep -l 'nullopt' src)
sed -i -e 's/? nullopt :/? std::nullopt :/g' $(git grep -l 'nullopt' src)
sed -i -e 's/: nullopt}/: std::nullopt}/g' $(git grep -l 'nullopt' src)

sed -i -e '/optional.h \\/d' src/Makefile.am

sed -i -e '/#include <optional.h>/d' src/test/fuzz/autofile.cpp src/test/fuzz/buffered_file.cpp src/test/fuzz/node_eviction.cpp

sed -i -e 's/#include <optional.h>/#include <optional>/g' $(git grep -l '#include <optional.h>' src)
-END VERIFY SCRIPT-

1 files changed, 2 insertions, 2 deletions

diff --git a/src/test/fuzz/psbt.cpp b/src/test/fuzz/psbt.cpp
index eb2754054a..e06f9d33bc 100644
--- a/src/test/fuzz/psbt.cpp
+++ b/src/test/fuzz/psbt.cpp
@@ -5,7 +5,7 @@
 #include <test/fuzz/fuzz.h>
 
 #include <node/psbt.h>
-#include <optional.h>
+#include <optional>
 #include <psbt.h>
 #include <pubkey.h>
 #include <script/script.h>
@@ -39,7 +39,7 @@ FUZZ_TARGET_INIT(psbt, initialize_psbt)
 
     (void)psbt.IsNull();
 
-    Optional<CMutableTransaction> tx = psbt.tx;
+    std::optional<CMutableTransaction> tx = psbt.tx;
     if (tx) {
         const CMutableTransaction& mtx = *tx;
         const PartiallySignedTransaction psbt_from_tx{mtx};