Remove deprecated macro SNAPSHOT_DEF.

Shall use SNAPSHOT_SPSC_DEF

doc/API.txt

@@ -7,4 +7,4 @@ V0.2.*: * worker_sync takes a 'worker_t' as an additional parameter
 	(This allows to perform a wait-on-event instead of a busy waiting). 
 	* worker_init takes an int as numWorker instead of an unsingned int.
 	* RBTREE pop method has been renamed into _pop_at
-
+        * SNAPSHOT_DEF has been removed. use SNAPSHOT_SPSC_DEF

m-snapshot.h

@@ -29,9 +29,6 @@
 #include "m-core.h"
 #include "m-genint.h"
 
-// For compatibility with previous version
-#define SNAPSHOT_DEF SNAPSHOT_SPSC_DEF
-
 /* Define a SRSW snapshot and it function
    USAGE: SNAPSHOT_SPSC_DEF(name, type[, oplist]) */
 #define SNAPSHOT_SPSC_DEF(name, ...)                                    \

tests/test-msnapshot.c

@@ -51,7 +51,7 @@ SNAPSHOT_SPSC_DEF(snapshot_mpz, testobj_t, TESTOBJ_OPLIST)
 SNAPSHOT_SPMC_DEF(snapshot_mrsw_data, data_t, DATA_OPLIST)
 SNAPSHOT_MPMC_DEF(snapshot_mrmw_data, data_t, DATA_OPLIST)
 END_COVERAGE
-SNAPSHOT_DEF(snapshot_data, data_t, DATA_OPLIST )
+SNAPSHOT_SPSC_DEF(snapshot_data, data_t, DATA_OPLIST )
 
 
 static void test_uint(void)