ltp: remove getrusage03 from stable

The getrusage03 test is being disabled as it is too dependent on runtime
conditions.

Bug: 70174578
Test: run vts-kernel -m VtsKernelLtp
Change-Id: I8aca5163b2da1f9b24a16285caa6ce69e25649e6
diff --git a/ltp/configs/stable_tests.py b/ltp/configs/stable_tests.py
index c1151af..7c00c6e 100644
--- a/ltp/configs/stable_tests.py
+++ b/ltp/configs/stable_tests.py
@@ -733,8 +733,6 @@
     'syscalls.getrusage01_64bit',
     'syscalls.getrusage02_32bit',
     'syscalls.getrusage02_64bit',
-    'syscalls.getrusage03_32bit',
-    'syscalls.getrusage03_64bit',
     'syscalls.getsid01_32bit',
     'syscalls.getsid01_64bit',
     'syscalls.getsid02_32bit',