build, wallet, doc: Remove BDB

test/functional/test_framework/test_framework.py

@@ -982,11 +982,6 @@ class BitcoinTestFramework(metaclass=BitcoinTestMetaClass):
         if not self.is_wallet_compiled():
             raise SkipTest("wallet has not been compiled.")
 
-    def skip_if_no_bdb(self):
-        """Skip the running test if BDB has not been compiled."""
-        if not self.is_bdb_compiled():
-            raise SkipTest("BDB has not been compiled.")
-
     def skip_if_no_wallet_tool(self):
         """Skip the running test if bitcoin-wallet has not been compiled."""
         if not self.is_wallet_tool_compiled():
@@ -1057,9 +1052,5 @@ class BitcoinTestFramework(metaclass=BitcoinTestMetaClass):
         """Checks whether the USDT tracepoints were compiled."""
         return self.config["components"].getboolean("ENABLE_USDT_TRACEPOINTS")
 
-    def is_bdb_compiled(self):
-        """Checks whether the wallet module was compiled with BDB support."""
-        return self.config["components"].getboolean("USE_BDB")
-
     def has_blockfile(self, node, filenum: str):
         return (node.blocks_path/ f"blk{filenum}.dat").is_file()