Removes ignition specific benchmarks.

tools/perf/benchmarks/speedometer.py

Index: tools/perf/benchmarks/speedometer.py
diff --git a/tools/perf/benchmarks/speedometer.py b/tools/perf/benchmarks/speedometer.py
index b4b12bfd18777f9c71c28aedc43375c889b86008..5fb3d2f15be95bd30ecf3b9a229a325fb26edbc8 100644
--- a/tools/perf/benchmarks/speedometer.py
+++ b/tools/perf/benchmarks/speedometer.py
@@ -22,7 +22,6 @@ from core import perf_benchmark
 
 from benchmarks import v8_helper
 
-from telemetry import benchmark
 from telemetry import page as page_module
 from telemetry.page import legacy_page_test
 from telemetry import story
@@ -109,17 +108,6 @@ class Speedometer(perf_benchmark.PerfBenchmark):
     return ps
 
 
-@benchmark.Disabled('reference')  # crbug.com/579546
-class SpeedometerIgnition(Speedometer):
-  def SetExtraBrowserOptions(self, options):
-    super(SpeedometerIgnition, self).SetExtraBrowserOptions(options)
-    v8_helper.EnableIgnition(options)
-
-  @classmethod
-  def Name(cls):
-    return 'speedometer-ignition'
-
-
 class SpeedometerTurbo(Speedometer):
   def SetExtraBrowserOptions(self, options):
     super(SpeedometerTurbo, self).SetExtraBrowserOptions(options)