Remove unused grpc health check endpoints (#6113)

We have generic `grpc_healthcheck` endpoint that get registered for all the components
during initialization stage.

Looks like these health checks that are part of actual component's struct itself came from legacy.

Signed-off-by: Kaviraj <kavirajkanagaraj@gmail.com>

pkg/distributor/distributor.go

@@ -19,7 +19,6 @@ import (
 	"github.com/weaveworks/common/httpgrpc"
 	"github.com/weaveworks/common/user"
 	"go.uber.org/atomic"
-	"google.golang.org/grpc/health/grpc_health_v1"
 
 	"github.com/grafana/dskit/tenant"
 
@@ -428,15 +427,6 @@ func (d *Distributor) sendSamplesErr(ctx context.Context, ingester ring.Instance
 	return err
 }
 
-// Check implements the grpc healthcheck
-func (d *Distributor) Check(_ context.Context, _ *grpc_health_v1.HealthCheckRequest) (*grpc_health_v1.HealthCheckResponse, error) {
-	status := grpc_health_v1.HealthCheckResponse_SERVING
-	if (d.State() != services.Running) || (d.distributorsLifecycler.GetState() != ring.ACTIVE) {
-		status = grpc_health_v1.HealthCheckResponse_NOT_SERVING
-	}
-	return &grpc_health_v1.HealthCheckResponse{Status: status}, nil
-}
-
 func (d *Distributor) parseStreamLabels(vContext validationContext, key string, stream *logproto.Stream) (string, error) {
 	labelVal, ok := d.labelCache.Get(key)
 	if ok {

pkg/ingester/ingester.go

@@ -778,15 +778,6 @@ func (i *Ingester) Series(ctx context.Context, req *logproto.SeriesRequest) (*lo
 	return instance.Series(ctx, req)
 }
 
-// Check implements grpc_health_v1.HealthCheck.
-func (i *Ingester) Check(ctx context.Context, req *grpc_health_v1.HealthCheckRequest) (*grpc_health_v1.HealthCheckResponse, error) {
-	status := grpc_health_v1.HealthCheckResponse_SERVING
-	if (i.State() != services.Running) || (i.lifecycler.GetState() != ring.ACTIVE) {
-		status = grpc_health_v1.HealthCheckResponse_NOT_SERVING
-	}
-	return &grpc_health_v1.HealthCheckResponse{Status: status}, nil
-}
-
 // Watch implements grpc_health_v1.HealthCheck.
 func (*Ingester) Watch(*grpc_health_v1.HealthCheckRequest, grpc_health_v1.Health_WatchServer) error {
 	return nil