[compiler-rt] [sanitizer_common] Drop remaining support for Android 5 or older (PR #146187)

[via llvm-commits]

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@@ -963,19 +957,8 @@ inline void AndroidLogInit() {}
 inline void SetAbortMessage(const char *) {}
 #endif
 
-#if SANITIZER_ANDROID
-void SanitizerInitializeUnwinder();
-AndroidApiLevel AndroidGetApiLevel();
-#else
-inline void AndroidLogWrite(const char *buffer_unused) {}
-inline void SanitizerInitializeUnwinder() {}
-inline AndroidApiLevel AndroidGetApiLevel() { return ANDROID_NOT_ANDROID; }
-#endif
-
 inline uptr GetPthreadDestructorIterations() {
-#if SANITIZER_ANDROID
-  return (AndroidGetApiLevel() == ANDROID_LOLLIPOP_MR1) ? 8 : 4;
-#elif SANITIZER_POSIX
+#if SANITIZER_POSIX
   return 4;
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enh-google wrote:

(unrelated to _this_ cleanup, but i'm curious why -- given the POSIX check -- this isn't `PTHREAD_DESTRUCTOR_ITERATIONS`, given that it's posix that guarantees `<pthread.h>` has that constant, and it's 4 on all of bionic/macOS/musl/glibc...)

https://github.com/llvm/llvm-project/pull/146187