Remove unused Android.mk in device/google/barbet.

Bug: 334955162
Test: CIs
Change-Id: Ib75bb1e00812fb83e5b1b325db249897c3724ef2
diff --git a/self-extractors/Android.mk b/self-extractors/Android.mk
deleted file mode 100644
index e69de29..0000000
--- a/self-extractors/Android.mk
+++ /dev/null
diff --git a/self-extractors/google_devices/staging/Android.mk b/self-extractors/google_devices/staging/Android.mk.template
similarity index 100%
rename from self-extractors/google_devices/staging/Android.mk
rename to self-extractors/google_devices/staging/Android.mk.template
diff --git a/self-extractors/qcom/staging/Android.mk b/self-extractors/qcom/staging/Android.mk.template
similarity index 100%
rename from self-extractors/qcom/staging/Android.mk
rename to self-extractors/qcom/staging/Android.mk.template