arm64: dts: ti: k3-j721e-sk: Remove firmware-name override for R5F

The firmware name for this core should stay as the default name
"j7-main-r5f0_0-fw". This is expected to by a symlink to the actual
firmware file. If one wants to use a different firmware they should
change where the symlink points. This is usually achieved with
an update-alternative or other distro specific selection mechanisms.

The actual selection is policy and does not belong in DT.
Remove this name override.
Signed-off-by: Andrew Davis <afd@ti.com>
Link: https://lore.kernel.org/r/20230307180942.2719-1-afd@ti.comSigned-off-by: Nishanth Menon <nm@ti.com>

arch/arm64/boot/dts/ti/k3-j721e-sk.dts

@@ -687,10 +687,6 @@ &wkup_gpio1 {
 	status = "disabled";
 };
 
-&main_r5fss0_core0{
-	firmware-name = "pdk-ipc/ipc_echo_test_mcu2_0_release_strip.xer5f";
-};
-
 &usb_serdes_mux {
 	idle-states = <1>, <1>; /* USB0 to SERDES3, USB1 to SERDES2 */
 };