Remove API Key Authentication code for go when cookie is used. (#1601)

Author: dmascialino

modules/openapi-generator/src/main/resources/go/api.mustache

@@ -236,6 +236,7 @@ func (a *{{{classname}}}Service) {{{nickname}}}(ctx context.Context{{#hasParams}
 {{/hasBodyParam}}
 {{#authMethods}}
 {{#isApiKey}}
+{{^isKeyInCookie}}
 	if ctx != nil {
 		// API Key Authentication
 		if auth, ok := ctx.Value(ContextAPIKey).(APIKey); ok {
@@ -253,7 +254,7 @@ func (a *{{{classname}}}Service) {{{nickname}}}(ctx context.Context{{#hasParams}
 			{{/isKeyInQuery}}
 		}
 	}
-
+{{/isKeyInCookie}}
 {{/isApiKey}}
 {{/authMethods}}
 	r, err := a.client.prepareRequest(ctx, localVarPath, localVarHttpMethod, localVarPostBody, localVarHeaderParams, localVarQueryParams, localVarFormParams, localVarFormFileName, localVarFileName, localVarFileBytes)