Remove PREUPLOAD.cfg from audio HAL example

As suggested by the comment on ag/12691153

Bug: 142480271
Test: N/A
Change-Id: Ic9e2b986d3f9734dd884a2c88ca86d251147126b
Merged-In: Ic9e2b986d3f9734dd884a2c88ca86d251147126b
diff --git a/audio/common/7.0/example/PREUPLOAD.cfg b/audio/common/7.0/example/PREUPLOAD.cfg
deleted file mode 100644
index 6b7fd71..0000000
--- a/audio/common/7.0/example/PREUPLOAD.cfg
+++ /dev/null
@@ -1,2 +0,0 @@
-[Builtin Hooks]
-clang_format = true