sensors: Remove PlatformSensorProviderLinux::GetAllSensorDevices().

This method was never implemented and is not called anywhere. It is better
to readd it if we ever really have a use for it.

Change-Id: I1c9b379e3dbe867e91f06f0170dce3abe04b8c98
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2218087
Auto-Submit: Raphael Kubo da Costa <raphael.kubo.da.costa@intel.com>
Commit-Queue: Reilly Grant <reillyg@chromium.org>
Reviewed-by: Reilly Grant <reillyg@chromium.org>
Cr-Commit-Position: refs/heads/master@{#772274}

services/device/generic_sensor/platform_sensor_provider_linux.cc

@@ -113,12 +113,6 @@ SensorInfoLinux* PlatformSensorProviderLinux::GetSensorDevice(
   return sensor->second.get();
 }
 
-void PlatformSensorProviderLinux::GetAllSensorDevices() {
-  DCHECK_CALLED_ON_VALID_THREAD(thread_checker_);
-  // TODO(maksims): implement this method once we have discovery API.
-  NOTIMPLEMENTED();
-}
-
 void PlatformSensorProviderLinux::SetSensorDeviceManagerForTesting(
     std::unique_ptr<SensorDeviceManager> sensor_device_manager) {
   DCHECK_CALLED_ON_VALID_THREAD(thread_checker_);

services/device/generic_sensor/platform_sensor_provider_linux.h

@@ -54,9 +54,6 @@ class PlatformSensorProviderLinux : public PlatformSensorProvider,
   // enumeration is ready.
   SensorInfoLinux* GetSensorDevice(mojom::SensorType type);
 
-  // Returns all found iio devices. Currently not implemented.
-  void GetAllSensorDevices();
-
   // Processed stored requests in |request_map_|.
   void ProcessStoredRequests();