CLEANUP: pattern: remove the pat_time definition

It was inherited from acl_time, introduced in 1.3.10 by commit a84d374367
("[MAJOR] new framework for generic ACL support") and was never ever used.
Let's simply drop it now.
diff --git a/include/types/pattern.h b/include/types/pattern.h
index a2d609b..143524f 100644
--- a/include/types/pattern.h
+++ b/include/types/pattern.h
@@ -121,13 +121,6 @@
 	int line;
 };
 
-/* How to store a time range and the valid days in 29 bits */
-struct pat_time {
-	int dow:7;              /* 1 bit per day of week: 0-6 */
-	int h1:5, m1:6;         /* 0..24:0..60. Use 0:0 for all day. */
-	int h2:5, m2:6;         /* 0..24:0..60. Use 24:0 for all day. */
-};
-
 /* This contain each tree indexed entry. This struct permit to associate
  * "sample" with a tree entry. It is used with maps.
  */
@@ -161,7 +154,6 @@
 			struct in6_addr addr;
 			unsigned char mask;     /* number of bits */
 		} ipv6;                         /* IPv6 address/mask */
-		struct pat_time time;           /* valid hours and days */
 		struct eb_root *tree;           /* tree storing all values if any */
 	} val;                                  /* direct value */
 	union {