Revert "device/bluetooth: Enable the use of btdispatch by default"

This reverts commit d85ee3b4.

Reason for revert: b:145163508

Original change's description:
> device/bluetooth: Enable the use of btdispatch by default
>
> This sets the feature flag kNewblue to be enabled by default. The effect
> of this is that Chrome will by default communicate to Chrome OS'
> Bluetooth dispatcher (btdispatch) instead of BlueZ. Currently,
> btdispatch only forwards the D-Bus traffic to BlueZ without NewBlue
> enabled.
>
> Bug: 999676
> Change-Id: I7089225726ef52c1b8465f3a67b3fdbf01b01882
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1783719
> Reviewed-by: Ryan Hansberry <hansberry@chromium.org>
> Reviewed-by: Reilly Grant <reillyg@chromium.org>
> Commit-Queue: Sonny Sasaka <sonnysasaka@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#693431}

TBR=mcchou@chromium.org,reillyg@chromium.org,sonnysasaka@chromium.org,hansberry@chromium.org

Bug: b:145163508,b:145317234
Change-Id: Iaa5ee6dd719ccc38bf31ce7adfd7ebfec1b08f0b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1951128
Commit-Queue: Sonny Sasaka <sonnysasaka@chromium.org>
Reviewed-by: Sonny Sasaka <sonnysasaka@chromium.org>
Cr-Commit-Position: refs/heads/master@{#721627}

device/base/features.cc

@@ -17,7 +17,8 @@ const base::Feature kNewBLEWinImplementation{"NewBLEWinImplementation",
 
 #if defined(OS_CHROMEOS)
 // Enables or disables the use of Bluetooth dispatcher daemon on Chrome OS.
-const base::Feature kNewblueDaemon{"Newblue", base::FEATURE_ENABLED_BY_DEFAULT};
+const base::Feature kNewblueDaemon{"Newblue",
+                                   base::FEATURE_DISABLED_BY_DEFAULT};
 #endif  // defined(OS_CHROMEOS)
 
 #if BUILDFLAG(ENABLE_VR)