Fix double close in btif.cc's dump.

dump closes a file descriptor that is still owned by a
ParcelFileDescriptor which leads eventually to a double close.

Test: treehugger
Change-Id: Id351b5429cb17b48e37313850a363d739d78c4a1

system/btif/src/bluetooth.cc

@@ -326,8 +326,6 @@ static void dump(int fd, const char** arguments) {
 #if (BTSNOOP_MEM == TRUE)
   btif_debug_btsnoop_dump(fd);
 #endif
-
-  close(fd);
 }
 
 static void dumpMetrics(std::string* output) {