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diff --git a/usr.sbin/unbound/ldns/doc/CodingStyle b/usr.sbin/unbound/ldns/doc/CodingStyle
deleted file mode 100644
index a326e5c3f99..00000000000
--- a/usr.sbin/unbound/ldns/doc/CodingStyle
+++ /dev/null
@@ -1,64 +0,0 @@
-The libdns coding style guide
-
-* Use of tabs (real tabs, 8 positions long)
-* Spaces only after comma's, and in between operators.
-  And after keywords (if, while, for)
-* Underscores to make long names readable
-* prefix (exported) identifiers with 'ldns_'
-* no unneeded parentheses after 'return'
-* always curly brackets in if-statements
-* use defines for (weird) constants, and masks
-* type 'bool', constants 'true'/'false'. Don't compare bools for
-  equality.
-* always use LDNS_MALLOC/FREE etc, or the new/free/deep_free functions
-* buffer can scale, so don't alloc the max size, but the min size
-* make lint (uses splint) is your friend
-
-
-* Return values:
-	- status code (structure to fill is usually passed as a first argument)
-	- new/pointer: return pointer or NULL on error
-	- 'read' functions: ldns_status wire2thing(uint8_t *p, size_t max,
-	                                           size_t pos, *thing);
-	- void functions like ldns_rr_free
-	- bool functions
-
-* Parameter sequence: (dest, [dest_meta, ] src, [src_meta] etc)
-* structure/union field names start with _ when "private"
-* enum for rcode, opcode, types etc,
-	example:
-	enum ldns_rcode {
-		LDNS_RCODE_OK = 0,
-		...      = .,
-		LDNS_RCODE_FIRST = LDNS_RCODE_OK,
-		LDNS_RCODE_LAST = 15,	
-		LDNS_RCODE_COUNT = LDNS_RCODE_LAST + 1
-	}
-* Everything by reference, all data structures an optional _clone() function
-* arrays: ps[] with size_t p_count for the number of elements
-* _size for size in bytes
-* _free and _clone copies perform deep free/copy.
-
-* Standard abbreviations, don't abbreviate other names:
-
-    id          = identity
-    rr          = resource record
-    rrset       = resource record set
-    rdata       = resource data
-    rdf         = resource data field
-    rcode       = result code
-    qr          = query/resource bit
-    aa          = authoritative answer
-    tc          = truncated
-    rd          = recursion disabled
-    cd          = checking disabled
-    ra          = recursion available
-    ad          = authentic data
-    qdcount     = question section count
-    ancount     = answer section count
-    nscount     = authority section count
-    arcount     = additional section count
-
-ldns-<tools>
-* use exit(EXIT_FAILURE)/ exit(SUCCES)
-*