Use inline keyword without underscores consistently

s/__inline__/inline
s/__inline/inline

Change-Id: I5d8d930a7a41d678a0795e7a608dacbb9eb8cb37
diff --git a/libc/include/android/api-level.h b/libc/include/android/api-level.h
index 77ec653..113897c 100644
--- a/libc/include/android/api-level.h
+++ b/libc/include/android/api-level.h
@@ -191,7 +191,7 @@
 #if __ANDROID_API__ < 29
 
 /* android_get_device_api_level is a static inline before API level 29. */
-#define __BIONIC_GET_DEVICE_API_LEVEL_INLINE static __inline
+#define __BIONIC_GET_DEVICE_API_LEVEL_INLINE static inline
 #include <bits/get_device_api_level_inlines.h>
 #undef __BIONIC_GET_DEVICE_API_LEVEL_INLINE