removed depricated parameters from slack functions, resolves #1402

content/influxdb/v2.0/reference/flux/stdlib/slack/endpoint.md

@@ -67,11 +67,8 @@ _**Data type:** Function_
 
 The returned record must include the following fields:
 
-- `username`
 - `channel`
-- `workspace`
 - `text`
-- `iconEmoji`
 - `color`
 
 _For more information, see [`slack.message()`](/influxdb/v2.0/reference/flux/stdlib/slack/message/)_
@@ -92,11 +89,8 @@ crit_statuses = from(bucket: "example-bucket")
 
 crit_statuses
   |> e(mapFn: (r) => ({
-      username: r.username,
       channel: r.channel,
-      workspace: r.workspace,
       text: r.text,
-      iconEmoji: r.iconEmoji,
       color: r.color,
     })
   )()

content/influxdb/v2.0/reference/flux/stdlib/slack/message.md

@@ -24,11 +24,8 @@ import "slack"
 slack.message(
   url: "https://slack.com/api/chat.postMessage",
   token: "mySuPerSecRetTokEn",
-  username: "Fluxtastic",
-  channel: "#flux",
-  workspace: "",
+  channel: "#flux",,
   text: "This is a message from the Flux slack.message() function.",
-  iconEmoji: "wave",
   color: "good"
 )
 ```
@@ -57,39 +54,16 @@ A token is only required if using the Slack chat.postMessage API.
 
 _**Data type:** String_
 
-### username
-The username to use when posting the message to a Slack channel. <span class="required">Required</span>
-
-_**Data type:** String_
-
 ### channel
 The name of channel to post the message to. <span class="required">Required</span>
 
 _**Data type:** String_
 
-### workspace
-The name of the Slack workspace to use if there are multiple.
-Defaults to `""`.
-
-_**Data type:** String_
-
 ### text
 The text to display in the Slack message. <span class="required">Required</span>
 
 _**Data type:** String_
 
-### iconEmoji
-The name of emoji to use as the user avatar when posting the message to Slack.
-<span class="required">Required</span>
-
-_**Data type:** String_
-
-{{% note %}}
-#### Things to know about iconEmoji
-- **Do not** enclose the name in colons `:` as you do in the Slack client.
-- `iconEmoji` only appears as the user avatar when using the Slack chat.postMessage API.
-{{% /note %}}
-
 ### color
 The color to include with the message.
 <span class="required">Required</span>
@@ -120,7 +94,6 @@ lastReported =
 slack.message(
   url: "https://slack.com/api/chat.postMessage",
   token: "mySuPerSecRetTokEn",
-  username: "johndoe",
   channel: "#system-status",
   text: "The last reported status was \"${lastReported.status}\"."
 )