Revert of [GN] Define USE_EABI_HARDFLOAT=1 when arm_float_abi=="hard"....

Revert of [GN] Define USE_EABI_HARDFLOAT=1 when arm_float_abi=="hard". (patchset #1 id:1 of https://codereview.chromium.org/1839763003/ )

Reason for revert:
Appears to break Android crbug.com/604422

Original issue's description:
> [GN] Define USE_EABI_HARDFLOAT=1 when arm_float_abi=="hard".
>
> Add this define to the config used for mksnapshot. This fixes a bug
> where certain applications would fail at runtime on Chromecast.
>
> BUG=592660
> LOG=Y
> Bug: internal b/27495984
>
> Test: Formerly broken Cast apps load and run as expected.
>
> Committed: https://crrev.com/86357d5235ceba61c151f0b6e509bcb365860454
> Cr-Commit-Position: refs/heads/master@{#35183}

TBR=dpranke@chromium.org,alokp@chromium.org,titzer@chromium.org,slan@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=592660,604422
LOG=n

Review URL: https://codereview.chromium.org/1906373002

Cr-Commit-Position: refs/heads/master@{#35725}

BUILD.gn

@@ -169,6 +169,7 @@ config("toolchain") {
   cflags = []
 
   # TODO(jochen): Add support for arm subarchs, mips, mipsel, mips64el.
+
   if (v8_target_arch == "arm") {
     defines += [ "V8_TARGET_ARCH_ARM" ]
     if (current_cpu == "arm") {
@@ -195,13 +196,8 @@ config("toolchain") {
         "CAN_USE_ARMV7_INSTRUCTIONS",
         "CAN_USE_VFP3_INSTRUCTIONS",
         "CAN_USE_VFP32DREGS",
+        "USE_EABI_HARDFLOAT=0",
       ]
-
-      if (arm_float_abi == "hard") {
-        defines += [ "USE_EABI_HARDFLOAT=1" ]
-      } else if (arm_float_abi == "softfp") {
-        defines += [ "USE_EABI_HARDFLOAT=0" ]
-      }
     }
 
     # TODO(jochen): Add support for arm_test_noprobe.
@@ -217,7 +213,7 @@ config("toolchain") {
   }
   if (v8_target_arch == "s390") {
     defines += [ "V8_TARGET_ARCH_S390" ]
-  }
+  } 
   if (v8_target_arch == "s390x") {
     defines += [
       "V8_TARGET_ARCH_S390",
@@ -230,7 +226,7 @@ config("toolchain") {
   if (v8_target_arch == "x64") {
     defines += [ "V8_TARGET_ARCH_X64" ]
   }
-
+     
   if (is_win) {
     defines += [ "WIN32" ]
     # TODO(jochen): Support v8_enable_prof.