Remove unused Iterable extensions

Signed-off-by: Graham <gpe@openrs2.org>

util/src/main/kotlin/org/openrs2/util/collect/IterableUtils.kt

@@ -1,29 +0,0 @@
-package org.openrs2.util.collect
-
-public fun <T> MutableIterable<T>.removeFirst(): T {
-    return removeFirstOrNull() ?: throw NoSuchElementException()
-}
-
-public fun <T> MutableIterable<T>.removeFirstOrNull(): T? {
-    val iterator = iterator()
-    if (!iterator.hasNext()) {
-        return null
-    }
-
-    val element = iterator.next()
-    iterator.remove()
-
-    return element
-}
-
-public inline fun <T> MutableIterable<T>.removeFirst(predicate: (T) -> Boolean): Boolean {
-    val iterator = iterator()
-    for (element in iterator) {
-        if (predicate(element)) {
-            iterator.remove()
-            return true
-        }
-    }
-
-    return false
-}

util/src/test/kotlin/org/openrs2/util/collect/IterableUtilsTest.kt

@@ -1,55 +0,0 @@
-package org.openrs2.util.collect
-
-import kotlin.test.Test
-import kotlin.test.assertEquals
-import kotlin.test.assertFailsWith
-import kotlin.test.assertFalse
-import kotlin.test.assertNull
-import kotlin.test.assertTrue
-
-class IterableUtilsTest {
-    @Test
-    fun testRemoveFirst() {
-        val list = mutableListOf(1, 2, 3)
-        assertEquals(1, list.removeFirst())
-        assertEquals(listOf(2, 3), list)
-
-        assertEquals(2, list.removeFirst())
-        assertEquals(listOf(3), list)
-
-        assertEquals(3, list.removeFirst())
-        assertEquals(emptyList(), list)
-
-        assertFailsWith<NoSuchElementException> {
-            list.removeFirst()
-        }
-    }
-
-    @Test
-    fun testRemoveFirstOrNull() {
-        val list = mutableListOf(1, 2, 3)
-        assertEquals(1, list.removeFirstOrNull())
-        assertEquals(listOf(2, 3), list)
-
-        assertEquals(2, list.removeFirstOrNull())
-        assertEquals(listOf(3), list)
-
-        assertEquals(3, list.removeFirstOrNull())
-        assertEquals(emptyList(), list)
-
-        assertNull(list.removeFirstOrNull())
-    }
-
-    @Test
-    fun testRemoveFirstMatching() {
-        val list = mutableListOf(1, 2, 2, 3)
-        assertTrue(list.removeFirst { it == 2 })
-        assertEquals(listOf(1, 2, 3), list)
-
-        assertTrue(list.removeFirst { it == 2 })
-        assertEquals(listOf(1, 3), list)
-
-        assertFalse(list.removeFirst { it == 2 })
-        assertEquals(listOf(1, 3), list)
-    }
-}