Update hooks.go for delete double event emit

[Hellobloc]

This PR is target to resolve issue-38.

Introduction

In the following code, your Project emit cachecontext twice which is not necessary and allowing emit same event twice.

// CacheContext returns a new Context with the multi-store cached and a new
// EventManager. The cached context is written to the context when writeCache
// is called. Note, events are automatically emitted on the parent context's
// EventManager when the caller executes the write.
func (c Context) CacheContext() (cc Context, writeCache func()) {
	cms := c.ms.CacheMultiStore()
	cc = c.WithMultiStore(cms).WithEventManager(NewEventManager())

	writeCache = func() {
		c.EventManager().EmitEvents(cc.EventManager().Events())
		cms.Write()
	}

	return cc, writeCache
}

ssc/x/epochs/types/hooks.go

Lines 61 to 80 in e4d2dd7

	func applyFuncIfNoError(ctx sdk.Context, f func(ctx sdk.Context) error) (err error) {
	// Add a panic safeguard
	defer func() {
	if recoveryError := recover(); recoveryError != nil {
	printPanicRecoveryError(ctx, recoveryError)
	err = errors.New("panic occurred during execution")
	}
	}()
	// makes a new cache context, which all state changes get wrapped inside of.
	cacheCtx, write := ctx.CacheContext()
	err = f(cacheCtx)
	if err != nil {
	ctx.Logger().Error(err.Error())
	} else {
	// no error, write the output of f
	write()
	ctx.EventManager().EmitEvents(cacheCtx.EventManager().Events())
	}
	return err
	}

[Hellobloc]

@rkollar