Remove FromJSON functions (Part 1) (#17961)

* Remove FromJSON functions (Part 1)

```release-note
Removed the following functions:
AccessDataFromJson
AccessResponseFromJson
AnalyticsRowFromJson
AnalyticsRowsFromJson
AuditFromJson
AuditsFromJson
AuthDataFromJson
AuthorizeRequestFromJson
BotFromJson
BotPatchFromJson
BotListFromJson
```

* fix tests

```release-note
NONE
```

model/audit.go

@@ -5,7 +5,6 @@ package model
 
 import (
 	"encoding/json"
-	"io"
 )
 
 type Audit struct {
@@ -22,9 +21,3 @@ func (o *Audit) ToJson() string {
 	b, _ := json.Marshal(o)
 	return string(b)
 }
-
-func AuditFromJson(data io.Reader) *Audit {
-	var o *Audit
-	json.NewDecoder(data).Decode(&o)
-	return o
-}