snippets: sdp: mspi: remove unused pins configuration

Current memory configuration is SINGLE mode. We need to remove
unused pins in this mode until SDP app supports it properly.
Otherwise it causes problems with reset ans WP pins.

Signed-off-by: Jakub Zymelka <jakub.zymelka@nordicsemi.no>

Author: jaz1-nordic

snippets/sdp/mspi/soc/nrf54l15_cpuapp.overlay

@@ -80,8 +80,6 @@
 			psels = <NRF_PSEL(SDP_MSPI_SCK, 2, 1)>,
 				<NRF_PSEL(SDP_MSPI_DQ0, 2, 2)>,
 				<NRF_PSEL(SDP_MSPI_DQ1, 2, 4)>,
-				<NRF_PSEL(SDP_MSPI_DQ2, 2, 3)>,
-				<NRF_PSEL(SDP_MSPI_DQ3, 2, 0)>,
 				<NRF_PSEL(SDP_MSPI_CS0, 2, 5)>;
 			nordic,drive-mode = <NRF_DRIVE_S0S1>;
 		};
@@ -91,8 +89,6 @@
 			psels = <NRF_PSEL(SDP_MSPI_SCK, 2, 1)>,
 				<NRF_PSEL(SDP_MSPI_DQ0, 2, 2)>,
 				<NRF_PSEL(SDP_MSPI_DQ1, 2, 4)>,
-				<NRF_PSEL(SDP_MSPI_DQ2, 2, 3)>,
-				<NRF_PSEL(SDP_MSPI_DQ3, 2, 0)>,
 				<NRF_PSEL(SDP_MSPI_CS0, 2, 5)>;
 			low-power-enable;
 		};