core: rmnet: Remove unnecessary warning

Remove warning from module load. Fixes the following-

WARNING: CPU: 2 PID: 735 at core/rmnet_config.c:753
 init_module+0x18/0x64 [rmnet_core]
pstate: 60400005 (nZCv daif +PAN -UAO)
pc : init_module+0x18/0x64 [rmnet_core]
lr : do_one_initcall+0x190/0x380
Call trace:
 init_module+0x18/0x64 [rmnet_core]
 do_one_initcall+0x190/0x380
 do_init_module+0x5c/0x210
 load_module+0x45d8/0x480c
 __arm64_sys_finit_module+0xec/0x120
 el0_svc_common+0xbc/0x1c0
 el0_svc_handler+0x6c/0x88
 el0_svc+0x8/0xc

CRs-Fixed: 2644088
Change-Id: Icab7f3b3021a94e4376374b9cb3b905178f9894a
Signed-off-by: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org>