samples: ipc: openamp_rsc_table: Remove configs already set by default

If an option is set in the project default configuration it does not
need to be set again in a board specific configuration overlay. Remove
instances of this.

Signed-off-by: Andrew Davis <[email protected]>

Author: glneo

samples/subsys/ipc/openamp_rsc_table/boards/colibri_imx7d_mcimx7d_m4.conf

@@ -1,11 +1,7 @@
-CONFIG_IPM=y
 CONFIG_IPM_IMX_MAX_DATA_SIZE_4=y
 CONFIG_OPENAMP_WITH_DCACHE=y
 CONFIG_SOC_RESET_HOOK=n
-CONFIG_OPENAMP=y
 CONFIG_OPENAMP_RSC_TABLE_NUM_RPMSG_BUFF=32
-CONFIG_OPENAMP_RSC_TABLE=y
-CONFIG_OPENAMP_MASTER=n
 
 
 CONFIG_ROMSTART_RELOCATION_ROM=y