Remove unused instr_action == 'instrument_classes' option from emma_instr.py

build/android/emma_instr_action.gypi

Index: build/android/emma_instr_action.gypi
diff --git a/build/android/emma_instr_action.gypi b/build/android/emma_instr_action.gypi
index fa6d06235ea16a51c5b2d7848cf71592a52a003d..5d22c2671c13e3649407f33200aeaac251e2f082 100644
--- a/build/android/emma_instr_action.gypi
+++ b/build/android/emma_instr_action.gypi
@@ -7,7 +7,6 @@
 
 {
   'variables': {
-    'instr_type%': 'jar',
     'input_path%': '',
     'output_path%': '',
     'stamp_path%': '',
@@ -24,13 +23,7 @@
           '--emma-jar=<(emma_jar)',
           '--filter-string=<(emma_filter)',
         ],
-        'conditions': [
-          ['instr_type == "jar"', {
-            'instr_action': 'instrument_jar',
-          }, {
-            'instr_action': 'instrument_classes',
-          }]
-        ],
+        'instr_action': 'instrument_jar',
       }, {
         'instr_action': 'copy',
         'extra_instr_args': [],