Apply suggestions from code review

Signed-off-by: yihuang <huang@crypto.com>

app/config.go

@@ -4,7 +4,6 @@ import (
  "flag"
 
  "github.com/cosmos/cosmos-sdk/types/simulation"
- "github.com/tharsis/ethermint/server/config"
 )
 
 // List of available flags for the simulator
@@ -74,23 +73,3 @@ func NewConfigFromFlags() simulation.Config {
  AllInvariants: FlagAllInvariantsValue,
  }
 }
-
-type StoreConfig struct {
- Streamers []string `mapstructure:"streamers"`
-}
-
-type StreamersConfig struct {
- File FileStreamerConfig `mapstructure:"file"`
-}
-
-type FileStreamerConfig struct {
- Prefix string `mapstructure:"prefix"`
- WriteDir string `mapstructure:"write_dir"`
-}
-
-type Config struct {
- config.Config
-
- Store StoreConfig `mapstructure:"store"`
- Streamers StreamersConfig `mapstructure:"streamers"`
-}