Revert "Register migration handler (#912)"

This reverts commit 579023e.

Author: philipsu522

x/dex/module.go

@@ -209,9 +209,6 @@ func (am AppModule) RegisterServices(cfg module.Configurator) {
 	_ = cfg.RegisterMigration(types.ModuleName, 15, func(ctx sdk.Context) error {
 		return migrations.V15ToV16(ctx, am.keeper)
 	})
-	_ = cfg.RegisterMigration(types.ModuleName, 16, func(ctx sdk.Context) error {
-		return migrations.V16ToV17(ctx, am.keeper)
-	})
 }
 
 // RegisterInvariants registers the capability module's invariants.
@@ -236,7 +233,7 @@ func (am AppModule) ExportGenesis(ctx sdk.Context, cdc codec.JSONCodec) json.Raw
 }
 
 // ConsensusVersion implements ConsensusVersion.
-func (AppModule) ConsensusVersion() uint64 { return 17 }
+func (AppModule) ConsensusVersion() uint64 { return 16 }
 
 // BeginBlock executes all ABCI BeginBlock logic respective to the capability module.
 func (am AppModule) BeginBlock(ctx sdk.Context, _ abci.RequestBeginBlock) {