MM-53688 Remove boards dataretention (#24231)

* remove boards data-retention

* remove another variable

* update snapshots, to remove boards

* need to keep config settings until focalboard is updated

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Co-authored-by: Mattermost Build <build@mattermost.com>

server/config/client.go

@@ -126,8 +126,6 @@ func GenerateClientConfig(c *model.Config, telemetryID string, license *model.Li
 	props["DataRetentionMessageRetentionDays"] = "0"
 	props["DataRetentionEnableFileDeletion"] = "false"
 	props["DataRetentionFileRetentionDays"] = "0"
-	props["DataRetentionEnableBoardsDeletion"] = "false"
-	props["DataRetentionBoardsRetentionDays"] = "0"
 
 	props["CustomUrlSchemes"] = strings.Join(c.DisplaySettings.CustomURLSchemes, ",")
 	props["IsDefaultMarketplace"] = strconv.FormatBool(*c.PluginSettings.MarketplaceURL == model.PluginSettingsDefaultMarketplaceURL)
@@ -200,8 +198,6 @@ func GenerateClientConfig(c *model.Config, telemetryID string, license *model.Li
 			props["DataRetentionMessageRetentionDays"] = strconv.FormatInt(int64(*c.DataRetentionSettings.MessageRetentionDays), 10)
 			props["DataRetentionEnableFileDeletion"] = strconv.FormatBool(*c.DataRetentionSettings.EnableFileDeletion)
 			props["DataRetentionFileRetentionDays"] = strconv.FormatInt(int64(*c.DataRetentionSettings.FileRetentionDays), 10)
-			props["DataRetentionEnableBoardsDeletion"] = strconv.FormatBool(*c.DataRetentionSettings.EnableBoardsDeletion)
-			props["DataRetentionBoardsRetentionDays"] = strconv.FormatInt(int64(*c.DataRetentionSettings.BoardsRetentionDays), 10)
 		}
 
 		if license.HasSharedChannels() {