refactor: remove try-except block because it isn't necessary

Signed-off-by: Yuki I <[email protected]>

Author: Yuki I

acapy_agent/ledger/indy_vdr.py

@@ -1247,12 +1247,7 @@ async def send_revoc_reg_entry(
         current_profile = profile or self.profile
         async with current_profile.session() as session:
             wallet = session.inject(BaseWallet)
-            try:
-                did_info = await wallet.get_public_did()
-            except Exception:
-                raise
-            finally:
-                del wallet
+            did_info = await wallet.get_public_did()
 
         if not did_info:
             raise LedgerTransactionError(