fix validator tests

frigate/config.py

@@ -408,9 +408,7 @@ class CameraGStreamerInput(CameraInput):
     )
 
 
-class CameraInputValidator:
-    @validator("inputs")
-    def validate_roles(cls, v):
+def validate_roles(cls, v):
     roles = [role for i in v for role in i.roles]
     roles_set = set(roles)
 
@@ -423,13 +421,21 @@ class CameraInputValidator:
     return v
 
 
-class CameraFfmpegConfig(FfmpegConfig, CameraInputValidator):
+class CameraFfmpegConfig(FfmpegConfig):
     inputs: List[CameraFFmpegInput] = Field(title="Camera FFMpeg inputs.")
 
+    @validator("inputs")
+    def validate_roles(cls, v):
+        return validate_roles(cls, v)
 
-class CameraGStreamerConfig(GstreamerConfig, CameraInputValidator):
+
+class CameraGStreamerConfig(GstreamerConfig):
     inputs: List[CameraGStreamerInput] = Field(title="Camera GStreamer inputs.")
 
+    @validator("inputs")
+    def validate_roles(cls, v):
+        return validate_roles(cls, v)
+
 
 class SnapshotsConfig(FrigateBaseModel):
     enabled: bool = Field(default=False, title="Snapshots enabled.")