Remove unused test helper functions related to java.util.Date

Author: dconeybe

firebase-dataconnect/testutil/src/main/kotlin/com/google/firebase/dataconnect/testutil/DateTimeTestUtils.kt

@@ -18,31 +18,10 @@ package com.google.firebase.dataconnect.testutil
 
 import com.google.firebase.Timestamp
 import java.util.Calendar
-import java.util.Date
 import java.util.GregorianCalendar
 import java.util.TimeZone
 import kotlin.random.Random
 
-/**
- * Creates and returns a new [Date] object that represents the given year, month, and day in UTC.
- *
- * @param year The year; must be between 0 and 9999, inclusive.
- * @param month The month; must be between 1 and 12, inclusive.
- * @param day The day of the month; must be between 1 and 31, inclusive.
- */
-fun dateFromYearMonthDayUTC(year: Int, month: Int, day: Int): Date {
-  require(year in 0..9999) { "year must be between 0 and 9999, inclusive" }
-  require(month in 1..12) { "month must be between 1 and 12, inclusive" }
-  require(day in 1..31) { "day must be between 1 and 31, inclusive" }
-
-  return GregorianCalendar(TimeZone.getTimeZone("UTC"))
-    .apply {
-      set(year, month - 1, day, 0, 0, 0)
-      set(Calendar.MILLISECOND, 0)
-    }
-    .time
-}
-
 /** Generates and returns a random [Timestamp] object. */
 fun randomTimestamp(): Timestamp {
   val nanoseconds = Random.nextInt(1_000_000_000)

firebase-dataconnect/testutil/src/main/kotlin/com/google/firebase/dataconnect/testutil/property/arbitrary/dates.kt

@@ -20,7 +20,6 @@ package com.google.firebase.dataconnect.testutil.property.arbitrary
 
 import com.google.firebase.dataconnect.LocalDate
 import com.google.firebase.dataconnect.testutil.NullableReference
-import com.google.firebase.dataconnect.testutil.dateFromYearMonthDayUTC
 import com.google.firebase.dataconnect.testutil.dayRangeInYear
 import com.google.firebase.dataconnect.testutil.property.arbitrary.DateEdgeCases.MAX_YEAR
 import com.google.firebase.dataconnect.testutil.property.arbitrary.DateEdgeCases.MIN_YEAR
@@ -102,9 +101,6 @@ data class DateTestData(
   val string: String,
 )
 
-fun DateTestData.toJavaUtilDate(): java.util.Date =
-  dateFromYearMonthDayUTC(year = date.year, month = date.month, day = date.day)
-
 @Suppress("MemberVisibilityCanBePrivate")
 object DateEdgeCases {
   // See https://en.wikipedia.org/wiki/ISO_8601#Years for rationale of lower bound of 1583.