Change collect_time data type in net usage tables

Data type changed from 'timestamp' to 'time without time zone'.

database/create/001-proinfo-oltp.sql

@@ -44,7 +44,7 @@ CREATE TABLE proinfo_net_usage (
 	contact_date   date      default CURRENT_DATE not null,
 	inep   	       CHARACTER VARYING(18) not null, 
 	macaddr	       CHARACTER VARYING(18) not null,
-	collect_time   TIMESTAMP,
+	collect_time   TIME WITHOUT TIME ZONE,
 	down_kbits     BIGINT,
 	down_packages  INTEGER,
 	up_kbits       BIGINT,

database/create/003-facts.sql

@@ -15,7 +15,7 @@ CREATE TABLE fact_net_usage (
 	dat_id 	DATE NOT NULL REFERENCES dim_date,
 	macaddr	MACADDR NOT NULL,
 
-	collect_time 	TIMESTAMP NOT NULL,
+	collect_time 	TIME WITHOUT TIME ZONE NOT NULL,
 	down_kbits 	BIGINT NOT NULL DEFAULT 0,
 	down_packages 	INTEGER NOT NULL DEFAULT 0,
 	up_kbits	BIGINT NOT NULL DEFAULT 0,