test_timer: nanokernel: use empty config for all arches

Extra config for x86 was unnecessary.

Change-Id: Ic86979e80db2c63e07b328375027acec97e751c7
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
diff --git a/tests/kernel/test_timer/nanokernel/Makefile b/tests/kernel/test_timer/nanokernel/Makefile
index e5444f4..28e8a5c 100644
--- a/tests/kernel/test_timer/nanokernel/Makefile
+++ b/tests/kernel/test_timer/nanokernel/Makefile
@@ -1,5 +1,5 @@
 KERNEL_TYPE = nano
 BOARD ?= qemu_x86
-CONF_FILE = prj_$(ARCH).conf
+CONF_FILE = prj.conf
 
 include $(ZEPHYR_BASE)/Makefile.inc
diff --git a/tests/kernel/test_timer/nanokernel/prj_arc.conf b/tests/kernel/test_timer/nanokernel/prj.conf
similarity index 100%
rename from tests/kernel/test_timer/nanokernel/prj_arc.conf
rename to tests/kernel/test_timer/nanokernel/prj.conf
diff --git a/tests/kernel/test_timer/nanokernel/prj_arm.conf b/tests/kernel/test_timer/nanokernel/prj_arm.conf
deleted file mode 100644
index 9df6571..0000000
--- a/tests/kernel/test_timer/nanokernel/prj_arm.conf
+++ /dev/null
@@ -1 +0,0 @@
-# use default configuration settings
diff --git a/tests/kernel/test_timer/nanokernel/prj_x86.conf b/tests/kernel/test_timer/nanokernel/prj_x86.conf
deleted file mode 100644
index 8158ec4..0000000
--- a/tests/kernel/test_timer/nanokernel/prj_x86.conf
+++ /dev/null
@@ -1,4 +0,0 @@
-# Let stack canaries use non-random number generator.
-# This option is NOT to be used in production code.
-
-CONFIG_TEST_RANDOM_GENERATOR=y