schemas: legacy: remove unused "Pwm" property

Tested: Schema Validator Pass

Change-Id: Id6f643fc433adc463baa720cc15110b85ab40e81
Signed-off-by: Alexander Hansen <alexander.hansen@9elements.com>
diff --git a/schemas/legacy.json b/schemas/legacy.json
index 0c4940f..9b63054 100644
--- a/schemas/legacy.json
+++ b/schemas/legacy.json
@@ -617,9 +617,6 @@
                 "PresenceGpio": {
                     "$ref": "#/$defs/Types/PresenceGpio"
                 },
-                "Pwm": {
-                    "$ref": "#/$defs/Types/Pwm"
-                },
                 "ScaleFactor": {
                     "$ref": "#/$defs/Types/ScaleFactor"
                 },