exchanges/bittrex,kucoin: Remove exchange implementation and fix minor test issue (#1403)

* exchanges/Bittrex: Remove exchange implementation

* Kucoin: Fix TestProcessMarketSnapshot after pair removal update

* Kucoin: Fix race due to duplicate setupWS call

Unleash your inner Max Verstappen

* Kucoin: Actually test spot/margin market snapshot replication

cmd/documentation/exchanges_templates/bittrex.tmpl

@@ -1,103 +0,0 @@
-{{define "exchanges bittrex" -}}
-{{template "header" .}}
-## Bittrex Exchange
-
-### Current Features
-
-+ REST Support
-
-### Notes
-
-- Bittrex used to have reversed market names: btc-ltc. The v3 API changed this to the more widely accepted format with first the base pair and then the quote pair: ltc-btc.
-- Asset names and market names are not case sensitive.
-
-### How to enable
-
-+ [Enable via configuration](https://github.com/thrasher-corp/gocryptotrader/tree/master/config#enable-exchange-via-config-example)
-
-+ Individual package example below:
-
-```go
-	// Exchanges will be abstracted out in further updates and examples will be
-	// supplied then
-```
-
-### How to do REST public/private calls
-
-+ If enabled via "configuration".json file the exchange will be added to the
-IBotExchange array in the ```go var bot Bot``` and you will only be able to use
-the wrapper interface functions for accessing exchange data. View routines.go
-for an example of integration usage with GoCryptoTrader. Rudimentary example
-below:
-
-main.go
-```go
-var b exchange.IBotExchange
-
-for i := range bot.Exchanges {
-	if bot.Exchanges[i].GetName() == "Bittrex" {
-		b = bot.Exchanges[i]
-	}
-}
-
-// Public calls - wrapper functions
-
-// Fetches current ticker information
-tick, err := b.FetchTicker()
-if err != nil {
-	// Handle error
-}
-
-// Fetches current orderbook information
-ob, err := b.FetchOrderbook()
-if err != nil {
-	// Handle error
-}
-
-// Private calls - wrapper functions - make sure your APIKEY and APISECRET are
-// set and AuthenticatedAPISupport is set to true
-
-// Fetches current account information
-accountInfo, err := b.GetAccountInfo()
-if err != nil {
-	// Handle error
-}
-```
-
-+ If enabled via individually importing package, rudimentary example below:
-
-```go
-// Public calls
-
-// Fetches current ticker information
-ticker, err := b.GetTicker()
-if err != nil {
-	// Handle error
-}
-
-// Fetches current orderbook information
-ob, err := b.GetOrderBook()
-if err != nil {
-	// Handle error
-}
-
-// Private calls - make sure your APIKEY and APISECRET are set and
-// AuthenticatedAPISupport is set to true
-
-// GetUserInfo returns account info
-accountInfo, err := b.GetUserInfo(...)
-if err != nil {
-	// Handle error
-}
-
-// Submits an order and the exchange and returns its tradeID
-tradeID, err := b.Trade(...)
-if err != nil {
-	// Handle error
-}
-```
-
-### Please click GoDocs chevron above to view current GoDoc information for this package
-{{template "contributions"}}
-{{template "donations" .}}
-{{end}}

cmd/documentation/exchanges_templates/exchanges_trade_readme.tmpl

@@ -49,7 +49,6 @@ _b in this context is an `IBotExchange` implemented struct_
 | Bithumb | Yes  | Yes       | No  |
 | BitMEX | Yes | Yes | Yes |
 | Bitstamp | Yes  | Yes       | No  |
-| Bittrex | Yes | Yes | No |
 | BTCMarkets | Yes | Yes       | No  |
 | BTSE | Yes | Yes | No |
 | Bybit | Yes | Yes | Yes |

cmd/documentation/root_templates/root_readme.tmpl

@@ -27,7 +27,6 @@ Join our slack to discuss all things related to GoCryptoTrader! [GoCryptoTrader
 | Bithumb | Yes  | Yes       | NA  |
 | BitMEX | Yes | Yes | NA |
 | Bitstamp | Yes  | Yes       | No  |
-| Bittrex | Yes | Yes | NA |
 | BTCMarkets | Yes | Yes       | NA  |
 | BTSE | Yes | Yes | NA |
 | Bybit | Yes | Yes | NA |