[nrf noup] cmake: linker: ld: target: Remove child/parent image flag

fixup! [nrf noup] tree-wide: support NCS Partition Manager (PM) definitions

Removes a condition in the partition manager enabled check which
was for child/parent images and keeps the sysbuild one only

Signed-off-by: Jamie McCrae <[email protected]>
(cherry picked from commit 20a2ba2)

Author: nordicjm

cmake/linker/ld/target.cmake

@@ -85,7 +85,7 @@ macro(configure_linker_script linker_script_gen linker_pass_define)
       ${current_includes}
       ${soc_linker_script_includes}
       ${template_script_defines}
-      -DUSE_PARTITION_MANAGER=$<OR:$<BOOL:${CONFIG_PARTITION_MANAGER_ENABLED}>,$<BOOL:${IMAGE_NAME}>,$<TARGET_EXISTS:partition_manager>>
+      -DUSE_PARTITION_MANAGER=$<BOOL:${CONFIG_PARTITION_MANAGER_ENABLED}>
       -E ${LINKER_SCRIPT}
       -P # Prevent generation of debug `#line' directives.
       -o ${linker_script_gen}