dt-bindings: clock: mediatek: Drop duplicate mediatek,mt6795-sys-clock.yaml

The compatible strings for mt6795 clocks are also documented in other
schemas:

"mediatek,mt6795-apmixedsys" in clock/mediatek,apmixedsys.yaml
"mediatek,mt6795-topckgen" in clock/mediatek,topckgen.yaml
"mediatek,mt6795-pericfg" in clock/mediatek,pericfg.yaml
"mediatek,mt6795-infracfg" in clock/mediatek,infracfg.yaml

The only difference is #reset-cells is not allowed in some of these,
but that aligns with actual users in .dts files.
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20240910234238.1028422-1-robh@kernel.orgSigned-off-by: Rob Herring (Arm) <robh@kernel.org>

Documentation/devicetree/bindings/clock/mediatek,mt6795-sys-clock.yaml

-# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
-%YAML 1.2
----
-$id: http://devicetree.org/schemas/clock/mediatek,mt6795-sys-clock.yaml#
-$schema: http://devicetree.org/meta-schemas/core.yaml#
-
-title: MediaTek System Clock Controller for MT6795
-
-maintainers:
-  - AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
-  - Chun-Jie Chen <chun-jie.chen@mediatek.com>
-
-description:
-  The Mediatek system clock controller provides various clocks and system
-  configuration like reset and bus protection on MT6795.
-
-properties:
-  compatible:
-    items:
-      - enum:
-          - mediatek,mt6795-apmixedsys
-          - mediatek,mt6795-infracfg
-          - mediatek,mt6795-pericfg
-          - mediatek,mt6795-topckgen
-      - const: syscon
-
-  reg:
-    maxItems: 1
-
-  '#clock-cells':
-    const: 1
-
-  '#reset-cells':
-    const: 1
-
-required:
-  - compatible
-  - reg
-  - '#clock-cells'
-
-additionalProperties: false
-
-examples:
-  - |
-    soc {
-        #address-cells = <2>;
-        #size-cells = <2>;
-
-        topckgen: clock-controller@10000000 {
-            compatible = "mediatek,mt6795-topckgen", "syscon";
-            reg = <0 0x10000000 0 0x1000>;
-            #clock-cells = <1>;
-        };
-    };