Factoring out dot-dropping for unit testing

main.hpp

@@ -10,20 +10,6 @@
 #include "json_logger.hpp"
 #include "serial.hpp"
 
-struct index {
-	long long start = 0;
-	long long end = 0;
-	unsigned long long ix = 0;
-	short segment = 0;
-	unsigned short t : 2;
-	unsigned long long seq : (64 - 18);  // pack with segment and t to stay in 32 bytes
-
-	index()
-	    : t(0),
-	      seq(0) {
-	}
-};
-
 struct clipbbox {
 	double lon1;
 	double lat1;