Revert "lineage: Sync external/dwarves from AOSP"

This reverts commit badc0985a3ed40e6deb9e4253d0a47f546fc219b.

Lets just use prebuilt pahole from Google since it's disallowed
to be used as a source built host tool [1].

[1] https://android.googlesource.com/platform/build/+/master/Changes.md#path-tools-path_tools

Change-Id: I05354498a37ec54e93d66998ff97481e25ae1763

snippets/external.xml

@@ -113,7 +113,6 @@
   <project path="external/ant-wireless/ant_native" name="LineageOS/android_external_ant-wireless_ant_native" groups="qcom,sdm660" remote="LineageOS" />
   <project path="external/ant-wireless/ant_service" name="LineageOS/android_external_ant-wireless_ant_service" groups="qcom,sdm660" remote="LineageOS" />
   <project path="external/ant-wireless/hidl" name="LineageOS/android_external_ant-wireless_hidl" groups="qcom,qssi" remote="LineageOS" />
-  <project path="external/dwarves" name="platform/external/dwarves" revision="3c8f7e8b2cf7ff902b71c42d00fda30f30114b07" remote="aosp" />
   <project path="external/json-c" name="LineageOS/android_external_json-c" groups="qcom,qssi" remote="LineageOS" />
   <project path="external/libncurses" name="LineageOS/android_external_libncurses" remote="LineageOS" />
   <project path="external/ntfs-3g" name="LineageOS/android_external_ntfs-3g" remote="LineageOS" />