[lldb] Android 9 has added the spawn.h header (#124452)

Author: brad0

lldb/source/Host/common/Host.cpp

@@ -21,10 +21,8 @@
 #include <sys/syscall.h>
 #include <sys/wait.h>
 #include <unistd.h>
-#if !defined(__ANDROID__)
 #include <spawn.h>
 #endif
-#endif
 
 #if defined(__APPLE__)
 #include <mach-o/dyld.h>