feat: remove provider migration for CV 3 to 6

.changelog/unreleased/features/provider/2211-deprecate-migration.md

@@ -0,0 +1,4 @@
+- Remove provider migrations to consensus versions lower than 7.
+  To migrate the provider module from consensus version 3, 4, or 5 to consensus version 7 or higher, 
+  users should use v4.3.x in production to migrate to consensus version 6.
+  ([\#2211](https://github.com/cosmos/interchain-security/pull/2211))

x/ccv/provider/migrations/migrator.go

@@ -8,9 +8,6 @@ import (
 	paramtypes "github.com/cosmos/cosmos-sdk/x/params/types"
 
 	providerkeeper "github.com/cosmos/interchain-security/v5/x/ccv/provider/keeper"
-	v4 "github.com/cosmos/interchain-security/v5/x/ccv/provider/migrations/v4"
-	v5 "github.com/cosmos/interchain-security/v5/x/ccv/provider/migrations/v5"
-	v6 "github.com/cosmos/interchain-security/v5/x/ccv/provider/migrations/v6"
 	v7 "github.com/cosmos/interchain-security/v5/x/ccv/provider/migrations/v7"
 	v8 "github.com/cosmos/interchain-security/v5/x/ccv/provider/migrations/v8"
 )
@@ -55,24 +52,23 @@ func (m Migrator) Migrate2to3(ctx sdktypes.Context) error {
 // Migrate3to4 migrates x/ccvprovider state from consensus version 3 to 4.
 // The migration consists of provider chain params additions.
 func (m Migrator) Migrate3to4(ctx sdktypes.Context) error {
-	v4.MigrateParams(ctx, m.paramSpace)
-	return nil
+	return fmt.Errorf("state migration failed: " +
+		"first run [email protected] in production to migrate from consensus version 3 to 4")
 }
 
 // Migrate4to5 migrates x/ccvprovider state from consensus version 4 to 5.
 // The migration consists of setting a top N of 95 for all registered consumer chains.
 func (m Migrator) Migrate4to5(ctx sdktypes.Context) error {
-	v5.MigrateTopNForRegisteredChains(ctx, m.providerKeeper)
-	return nil
+	return fmt.Errorf("state migration failed: " +
+		"first run [email protected] in production to migrate from consensus version 4 to 5")
 }
 
 // Migrate5to6 migrates x/ccvprovider state from consensus version 5 to 6.
 // It consists of setting the `NumberOfEpochsToStartReceivingRewards` param, as well as
 // computing and storing the minimal power in the top N for all registered consumer chains.
 func (m Migrator) Migrate5to6(ctx sdktypes.Context) error {
-	v6.MigrateParams(ctx, m.paramSpace)
-	v6.MigrateMinPowerInTopN(ctx, m.providerKeeper)
-	return nil
+	return fmt.Errorf("state migration failed: " +
+		"first run [email protected] in production to migrate from consensus version 5 to 6")
 }
 
 // Migrate6to7 migrates x/ccvprovider state from consensus version 6 to 7.