tests: Don't override tick rate in Ruby tests

Most Ruby tests assume that the highest frequency in the system under
test is 1GHz and limits the global tick rate to this frequency. This
assumption is broken since the default Ruby configuration scripts
clock the CPU at 2Ghz, which results in warnings and sometimes
incorrect behaviour.

Change-Id: I4b204660862ce3b0ea4a13df42caacd4398fef8c
Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/15975
Reviewed-by: Nikos Nikoleris <nikos.nikoleris@arm.com>
Reviewed-by: Jason Lowe-Power <jason@lowepower.com>
diff --git a/tests/configs/gpu-randomtest-ruby.py b/tests/configs/gpu-randomtest-ruby.py
index d0a8918..3d088f4 100644
--- a/tests/configs/gpu-randomtest-ruby.py
+++ b/tests/configs/gpu-randomtest-ruby.py
@@ -140,6 +140,3 @@
 
 root = Root(full_system = False, system = system )
 root.system.mem_mode = 'timing'
-
-# Not much point in this being higher than the L1 latency
-m5.ticks.setGlobalFrequency('1ns')
diff --git a/tests/configs/memtest-ruby.py b/tests/configs/memtest-ruby.py
index 8b92af4..9cf92af 100644
--- a/tests/configs/memtest-ruby.py
+++ b/tests/configs/memtest-ruby.py
@@ -116,6 +116,3 @@
 
 root = Root(full_system = False, system = system)
 root.system.mem_mode = 'timing'
-
-# Not much point in this being higher than the L1 latency
-m5.ticks.setGlobalFrequency('1ns')
diff --git a/tests/configs/rubytest-ruby.py b/tests/configs/rubytest-ruby.py
index 27dc0f2..207f28c 100644
--- a/tests/configs/rubytest-ruby.py
+++ b/tests/configs/rubytest-ruby.py
@@ -125,6 +125,3 @@
 
 root = Root(full_system = False, system = system )
 root.system.mem_mode = 'timing'
-
-# Not much point in this being higher than the L1 latency
-m5.ticks.setGlobalFrequency('1ns')
diff --git a/tests/configs/simple-timing-mp-ruby.py b/tests/configs/simple-timing-mp-ruby.py
index 897e053..248d046 100644
--- a/tests/configs/simple-timing-mp-ruby.py
+++ b/tests/configs/simple-timing-mp-ruby.py
@@ -93,6 +93,3 @@
 
 root = Root( full_system=False, system = system )
 root.system.mem_mode = 'timing'
-
-# Not much point in this being higher than the L1 latency
-m5.ticks.setGlobalFrequency('1ns')
diff --git a/tests/configs/simple-timing-ruby.py b/tests/configs/simple-timing-ruby.py
index e76cd39..26ca3e9 100644
--- a/tests/configs/simple-timing-ruby.py
+++ b/tests/configs/simple-timing-ruby.py
@@ -97,6 +97,3 @@
 
 root = Root(full_system = False, system = system)
 root.system.mem_mode = 'timing'
-
-# Not much point in this being higher than the L1 latency
-m5.ticks.setGlobalFrequency('1ns')