Remove unused functions from utils.c

Remove the following unused functions:
_timescaledb_internal.to_microseconds(TIMESTAMPTZ)
_timescaledb_internal.to_timestamp_pg(BIGINT)
_timescaledb_internal.time_to_internal(anyelement)

sql/updates/1.0.1--1.1.0-dev.sql

@@ -5,3 +5,6 @@ DROP FUNCTION IF EXISTS _timescaledb_internal.drop_chunks_impl(BIGINT, NAME, NAM
 DROP FUNCTION IF EXISTS _timescaledb_internal.drop_chunks_type_check(REGTYPE, NAME, NAME);
 DROP FUNCTION IF EXISTS _timescaledb_internal.dimension_get_time(INTEGER);
 DROP FUNCTION IF EXISTS create_hypertable(regclass, name, name, integer, name, name, anyelement, boolean, boolean, regproc, boolean, text, regproc);
+DROP FUNCTION IF EXISTS _timescaledb_internal.to_microseconds(TIMESTAMPTZ);
+DROP FUNCTION IF EXISTS _timescaledb_internal.to_timestamp_pg(BIGINT);
+DROP FUNCTION IF EXISTS _timescaledb_internal.time_to_internal(anyelement);

sql/util_time.sql

@@ -4,20 +4,14 @@
 -- at the top level directory of the TimescaleDB distribution.
 
 -- This file contains utilities for time conversion.
-CREATE OR REPLACE FUNCTION _timescaledb_internal.to_microseconds(ts TIMESTAMPTZ) RETURNS BIGINT
-    AS '@MODULE_PATHNAME@', 'ts_pg_timestamp_to_microseconds' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
-
 CREATE OR REPLACE FUNCTION _timescaledb_internal.to_unix_microseconds(ts TIMESTAMPTZ) RETURNS BIGINT
     AS '@MODULE_PATHNAME@', 'ts_pg_timestamp_to_unix_microseconds' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
 
 CREATE OR REPLACE FUNCTION _timescaledb_internal.to_timestamp(unixtime_us BIGINT) RETURNS TIMESTAMPTZ
     AS '@MODULE_PATHNAME@', 'ts_pg_unix_microseconds_to_timestamp' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
 
-CREATE OR REPLACE FUNCTION _timescaledb_internal.to_timestamp_pg(postgres_us BIGINT) RETURNS TIMESTAMPTZ
-    AS '@MODULE_PATHNAME@', 'ts_pg_microseconds_to_timestamp' LANGUAGE C IMMUTABLE STRICT PARALLEL SAFE;
-
 -- Time can be represented in a hypertable as an int* (bigint/integer/smallint) or as a timestamp type (
--- with or without timezones). In or metatables and other internal systems all time values are stored as bigint.
+-- with or without timezones). In metatables and other internal systems all time values are stored as bigint.
 -- Converting from int* columns to internal representation is a cast to bigint.
 -- Converting from timestamps to internal representation is conversion to epoch (in microseconds).
 
@@ -60,5 +54,3 @@ $BODY$
     SELECT (int_sec * 1000000)::bigint from extract(epoch from chunk_interval) as int_sec;
 $BODY$;
 
-CREATE OR REPLACE FUNCTION _timescaledb_internal.time_to_internal(time_element anyelement) RETURNS BIGINT
-AS '@MODULE_PATHNAME@', 'ts_time_to_internal' LANGUAGE C IMMUTABLE PARALLEL SAFE STRICT;

src/utils.c

@@ -34,60 +34,6 @@
 #include <utils/fmgrprotos.h>
 #endif
 
-TS_FUNCTION_INFO_V1(ts_pg_timestamp_to_microseconds);
-
-/*
- * Convert a Postgres TIMESTAMP to BIGINT microseconds relative the Postgres epoch.
- */
-Datum
-ts_pg_timestamp_to_microseconds(PG_FUNCTION_ARGS)
-{
-	TimestampTz timestamp = PG_GETARG_TIMESTAMPTZ(0);
-	int64		microseconds;
-
-	if (!IS_VALID_TIMESTAMP(timestamp))
-		ereport(ERROR,
-				(errcode(ERRCODE_DATETIME_VALUE_OUT_OF_RANGE),
-				 errmsg("timestamp out of range")));
-
-#ifdef HAVE_INT64_TIMESTAMP
-	microseconds = timestamp;
-#else
-	if (1)
-	{
-		int64		seconds = (int64) timestamp;
-
-		microseconds = (seconds * USECS_PER_SEC) + ((timestamp - seconds) * USECS_PER_SEC);
-	}
-#endif
-	PG_RETURN_INT64(microseconds);
-}
-
-TS_FUNCTION_INFO_V1(ts_pg_microseconds_to_timestamp);
-
-/*
- * Convert BIGINT microseconds relative the UNIX epoch to a Postgres TIMESTAMP.
- */
-Datum
-ts_pg_microseconds_to_timestamp(PG_FUNCTION_ARGS)
-{
-	int64		microseconds = PG_GETARG_INT64(0);
-	TimestampTz timestamp;
-
-#ifdef HAVE_INT64_TIMESTAMP
-	timestamp = microseconds;
-#else
-	timestamp = microseconds / USECS_PER_SEC;
-#endif
-
-	if (!IS_VALID_TIMESTAMP(timestamp))
-		ereport(ERROR,
-				(errcode(ERRCODE_DATETIME_VALUE_OUT_OF_RANGE),
-				 errmsg("timestamp out of range")));
-
-	PG_RETURN_TIMESTAMPTZ(timestamp);
-}
-
 TS_FUNCTION_INFO_V1(ts_pg_timestamp_to_unix_microseconds);
 
 /*
@@ -157,18 +103,6 @@ ts_pg_unix_microseconds_to_timestamp(PG_FUNCTION_ARGS)
 	PG_RETURN_TIMESTAMPTZ(timestamp);
 }
 
-TS_FUNCTION_INFO_V1(ts_time_to_internal);
-
-Datum
-ts_time_to_internal(PG_FUNCTION_ARGS)
-{
-	if (PG_ARGISNULL(0))
-		PG_RETURN_NULL();
-
-	PG_RETURN_INT64(ts_time_value_to_internal(PG_GETARG_DATUM(0), get_fn_expr_argtype(fcinfo->flinfo, 0), false));
-}
-
-
 /* Convert valid timescale time column type to internal representation */
 int64
 ts_time_value_to_internal(Datum time_val, Oid type_oid, bool failure_ok)