feat: deprecate tree_path and rlnDB (#3577)

tests/node/test_wakunode_legacy_lightpush.nim

@@ -138,11 +138,7 @@ suite "RLN Proofs as a Lightpush Service":
     manager = waitFor setupOnchainGroupManager()
 
     # mount rln-relay
-    let wakuRlnConfig = getWakuRlnConfig(
-      manager = manager,
-      treePath = genTempPath("rln_tree", "wakunode_1"),
-      index = MembershipIndex(1),
-    )
+    let wakuRlnConfig = getWakuRlnConfig(manager = manager, index = MembershipIndex(1))
 
     await allFutures(server.start(), client.start())
     await server.start()

tests/node/test_wakunode_lightpush.nim

@@ -132,11 +132,7 @@ suite "RLN Proofs as a Lightpush Service":
     manager = waitFor setupOnchainGroupManager()
 
     # mount rln-relay
-    let wakuRlnConfig = getWakuRlnConfig(
-      manager = manager,
-      treePath = genTempPath("rln_tree", "wakunode_1"),
-      index = MembershipIndex(1),
-    )
+    let wakuRlnConfig = getWakuRlnConfig(manager = manager, index = MembershipIndex(1))
 
     await allFutures(server.start(), client.start())
     await server.start()

tests/node/test_wakunode_relay_rln.nim

@@ -86,7 +86,6 @@ proc getWakuRlnConfigOnChain*(
     credIndex: some(credIndex),
     ethContractAddress: rlnRelayEthContractAddress,
     ethClientAddress: ethClientAddress.get(EthClient),
-    treePath: genTempPath("rln_tree", "wakunode_" & $credIndex),
     epochSizeSec: 1,
     onFatalErrorAction: fatalErrorHandler.get(fatalErrorVoidHandler),
     # If these are used, initialisation fails with "failed to mount WakuRlnRelay: could not initialize the group manager: the commitment does not have a membership"
@@ -228,7 +227,6 @@ suite "Waku RlnRelay - End to End - Static":
         dynamic: true,
         credIndex: some(0.uint),
         userMessageLimit: 111,
-        treepath: genTempPath("rln_tree", "wakunode_0"),
         ethClientAddress: EthClient,
         ethContractAddress: $contractAddress,
         chainId: 1337,