Removed unused variables and functions

Author: Nikita Glukhov

src/backend/tsearch/wparser.c

@@ -379,7 +379,6 @@ ts_headline_jsonb_byid_opt(PG_FUNCTION_ARGS)
 	text	   *opt = (PG_NARGS() > 3 && PG_GETARG_POINTER(3)) ? PG_GETARG_TEXT_P(3) : NULL;
 	Jsonb	   *out;
 	JsonTransformStringValuesAction action = (JsonTransformStringValuesAction) headline_json_value;
-	JsonValue	jv;
 	HeadlineParsedText prs;
 	HeadlineJsonState *state = palloc0(sizeof(HeadlineJsonState));
 	Datum		res;

src/backend/utils/adt/jsonb_util.c

@@ -2574,6 +2574,7 @@ CompressedDatumDecompress(CompressedDatum *cd, Size offset)
 	cd->decompressed_len = offset;
 }
 
+#if 0 /* unused */
 static void
 CompressedDatumDecompressAll(CompressedDatum *cd)
 {
@@ -2588,6 +2589,7 @@ CompressedDatumDecompressAll(CompressedDatum *cd)
 		cd->decompressed_len = cd->total_len;
 	}
 }
+#endif
 
 static void
 jsonbzInitContainer(JsonContainerData *jc, CompressedJsonb *cjb, int len)

src/backend/utils/adt/jsonfuncs.c

@@ -682,8 +682,6 @@ json_object_field_text(PG_FUNCTION_ARGS)
 static JsonValue *
 json_array_element_internal(Json *jb, int element)
 {
-	JsonbValue *v;
-
 	if (!JB_ROOT_IS_ARRAY(jb))
 		return NULL;