Remove arm_float_abi=hard from GYP_DEFINES

scripts/slave/recipes/v8.expected/full_client_v8_V8_Arm___debug_builder.json

 [
   {
     "cmd": [
       "python",
       "-u",
       "[BUILD]/scripts/slave/bot_update.py",
       "--master",
       "client.v8",
       "--builder",
       "V8 Arm - debug builder",
@@ skipping 42 matching lines @@
     "cmd": [
       "python",
       "-u",
       "[DEPOT_TOOLS]/gclient.py",
       "runhooks"
     ],
     "cwd": "[SLAVE_BUILD]",
     "env": {
       "CXX": "/usr/bin/arm-linux-gnueabihf-g++",
       "GYP_CROSSCOMPILE": "1",
-      "GYP_DEFINES": "arm_float_abi=hard target_arch=arm v8_enable_slow_dchecks=1 v8_optimized_debug=1 v8_target_arch=arm",
+      "GYP_DEFINES": "target_arch=arm v8_enable_slow_dchecks=1 v8_optimized_debug=1 v8_target_arch=arm",
       "LINK": "/usr/bin/arm-linux-gnueabihf-g++"
     },
     "name": "gclient runhooks"
   },
   {
     "cmd": [
       "python",
       "-u",
       "[BUILD]/scripts/slave/cleanup_temp.py"
     ],
@@ skipping 68 matching lines @@
           "parent_got_revision_cp": "refs/heads/master@{#50110}",
           "revision": "f2cbea7e89a45f46819777bb78a1f5bd0241f64c"
         }
       }
     ],
     "~followup_annotations": [
       "@@@STEP_TEXT@V8 Arm - debug - 1<br />V8 Arm - debug - 2<br />V8 Arm GC Stress@@@"
     ]
   }
 ]