Remove DESCR entries for json operator functions.

Per -hackers discussion.

src/include/catalog/pg_proc.h

@@ -4134,21 +4134,15 @@ DATA(insert OID = 3176 (  to_json	   PGNSP PGUID 12 1 0 0 0 f f f f t f s 1 0 11
 DESCR("map input to json");
 
 DATA(insert OID = 3947 (  json_object_field			PGNSP PGUID 12 1 0 0 0 f f f f t f i 2 0 114 "114 25" _null_ _null_ "{from_json, field_name}" _null_ json_object_field _null_ _null_ _null_ ));
-DESCR("get json object field");
 DATA(insert OID = 3948 (  json_object_field_text	PGNSP PGUID 12 1 0 0 0 f f f f t f i 2 0 25  "114 25" _null_ _null_ "{from_json, field_name}" _null_ json_object_field_text _null_ _null_ _null_ ));
-DESCR("get json object field as text");
 DATA(insert OID = 3949 (  json_array_element		PGNSP PGUID 12 1 0 0 0 f f f f t f i 2 0 114 "114 23" _null_ _null_ "{from_json, element_index}" _null_ json_array_element _null_ _null_ _null_ ));
-DESCR("get json array element");
 DATA(insert OID = 3950 (  json_array_element_text	PGNSP PGUID 12 1 0 0 0 f f f f t f i 2 0 25  "114 23" _null_ _null_ "{from_json, element_index}" _null_ json_array_element_text _null_ _null_ _null_ ));
-DESCR("get json array element as text");
 DATA(insert OID = 3951 (  json_extract_path			PGNSP PGUID 12 1 0 25 0 f f f f t f i 2 0 114 "114 1009" "{114,1009}" "{i,v}" "{from_json,path_elems}" _null_ json_extract_path _null_ _null_ _null_ ));
 DESCR("get value from json with path elements");
 DATA(insert OID = 3952 (  json_extract_path_op		PGNSP PGUID 12 1 0 0 0	f f f f t f i 2 0 114 "114 1009" _null_ _null_ "{from_json,path_elems}" _null_ json_extract_path _null_ _null_ _null_ ));
-DESCR("get value from json with path elements");
 DATA(insert OID = 3953 (  json_extract_path_text	PGNSP PGUID 12 1 0 25 0 f f f f t f i 2 0 25 "114 1009" "{114,1009}" "{i,v}" "{from_json,path_elems}" _null_ json_extract_path_text _null_ _null_ _null_ ));
 DESCR("get value from json as text with path elements");
 DATA(insert OID = 3954 (  json_extract_path_text_op PGNSP PGUID 12 1 0 0 0	f f f f t f i 2 0 25 "114 1009" _null_ _null_ "{from_json,path_elems}" _null_ json_extract_path_text _null_ _null_ _null_ ));
-DESCR("get value from json as text with path elements");
 DATA(insert OID = 3955 (  json_array_elements		PGNSP PGUID 12 1 100 0 0 f f f f t t i 1 0 114 "114" "{114,114}" "{i,o}" "{from_json,value}" _null_ json_array_elements _null_ _null_ _null_ ));
 DESCR("key value pairs of a json object");
 DATA(insert OID = 3956 (  json_array_length			PGNSP PGUID 12 1 0 0 0 f f f f t f i 1 0 23 "114" _null_ _null_ _null_ _null_ json_array_length _null_ _null_ _null_ ));