android: Track platform_testing from aosp

- We no longer need this as we are using icon loader lib from Trebuchet

default.xml

@@ -566,7 +566,7 @@
   <project path="packages/services/Telephony" remote="e" name="e/os/android_packages_services_Telephony" groups="pdk-cw-fs,pdk-fs" />
   <project path="packages/wallpapers/LivePicker" name="LineageOS/android_packages_wallpapers_LivePicker" groups="pdk-fs" />
   <project path="pdk" name="platform/pdk" groups="pdk" remote="aosp" />
-  <project path="platform_testing" remote="e" name="e/os/android_platform_testing" groups="pdk-fs,pdk-cw-fs,cts" />
+  <project path="platform_testing" name="platform/platform_testing" groups="pdk-fs,pdk-cw-fs,cts" remote="aosp" />
   <project path="prebuilts/abi-dumps/ndk" name="platform/prebuilts/abi-dumps/ndk" groups="pdk-fs" clone-depth="1" remote="aosp" />
   <project path="prebuilts/abi-dumps/vndk" name="platform/prebuilts/abi-dumps/vndk" groups="pdk-fs" clone-depth="1" remote="aosp" />
   <project path="prebuilts/android-emulator" name="platform/prebuilts/android-emulator" groups="pdk-fs" clone-depth="1" remote="aosp" />