Move hardware/libhardware_legacy back to AOSP remote

It's no longer necessary to change anything in this repository.

Change-Id: Ie7933eb072186c07b3b2978370ed68bc36a3a1e3

default.xml

@@ -471,7 +471,7 @@
   <project path="hardware/invensense" name="platform/hardware/invensense" groups="invensense,pdk" remote="aosp" />
   <project path="hardware/knowles/athletico/sound_trigger_hal" name="platform/hardware/knowles/athletico/sound_trigger_hal" groups="coral,generic_fs" remote="aosp" />
   <project path="hardware/libhardware" name="LineageOS/android_hardware_libhardware" groups="pdk" />
-  <project path="hardware/libhardware_legacy" name="LineageOS/android_hardware_libhardware_legacy" groups="pdk" />
+  <project path="hardware/libhardware_legacy" name="platform/hardware/libhardware_legacy" groups="pdk" remote="aosp" />
   <project path="hardware/nxp/nfc" name="LineageOS/android_hardware_nxp_nfc" groups="pdk" />
   <project path="hardware/nxp/secure_element" name="platform/hardware/nxp/secure_element" groups="pdk" remote="aosp" />
   <project path="hardware/qcom/audio" name="LineageOS/android_hardware_qcom_audio" groups="qcom,qcom_audio,pdk-qcom" />