Use inline keyword without underscores consistently

s/__inline__/inline
s/__inline/inline

Change-Id: I5d8d930a7a41d678a0795e7a608dacbb9eb8cb37
diff --git a/libc/bionic/sys_statvfs.cpp b/libc/bionic/sys_statvfs.cpp
index b3a0aca..3a05c3f 100644
--- a/libc/bionic/sys_statvfs.cpp
+++ b/libc/bionic/sys_statvfs.cpp
@@ -17,7 +17,7 @@
 #include <sys/statfs.h>
 #include <sys/statvfs.h>
 
-static __inline void __bionic_statfs_to_statvfs(const struct statfs* src, struct statvfs* dst) {
+static inline void __bionic_statfs_to_statvfs(const struct statfs* src, struct statvfs* dst) {
   dst->f_bsize = src->f_bsize;
   dst->f_frsize = src->f_frsize;
   dst->f_blocks = src->f_blocks;