Remove unused zero/zeroOrNull

Apparently its usages were replaced with convertTo

Author: koperagen

core/api/core.api

@@ -5727,8 +5727,6 @@ public final class org/jetbrains/kotlinx/dataframe/impl/UtilsKt {
 	public static final fun headPlusArray (Z[Z)[Z
 	public static final fun toCamelCaseByDelimiters (Ljava/lang/String;Lkotlin/text/Regex;Ljava/lang/String;)Ljava/lang/String;
 	public static synthetic fun toCamelCaseByDelimiters$default (Ljava/lang/String;Lkotlin/text/Regex;Ljava/lang/String;ILjava/lang/Object;)Ljava/lang/String;
-	public static final fun zero (Lkotlin/reflect/KClass;)Ljava/lang/Number;
-	public static final fun zeroOrNull (Lkotlin/reflect/KClass;)Ljava/lang/Number;
 }
 
 public final class org/jetbrains/kotlinx/dataframe/impl/aggregation/AggregatableInternalKt {

core/src/main/kotlin/org/jetbrains/kotlinx/dataframe/impl/Utils.kt

@@ -13,7 +13,6 @@ import org.jetbrains.kotlinx.dataframe.impl.columns.resolve
 import org.jetbrains.kotlinx.dataframe.impl.columns.toColumnSet
 import org.jetbrains.kotlinx.dataframe.nrow
 import java.math.BigDecimal
-import java.math.BigInteger
 import kotlin.reflect.KCallable
 import kotlin.reflect.KClass
 import kotlin.reflect.KFunction
@@ -121,25 +120,6 @@ internal fun <T> Iterable<T>.anyNull(): Boolean = any { it == null }
 @PublishedApi
 internal fun emptyPath(): ColumnPath = ColumnPath(emptyList())
 
-@PublishedApi
-internal fun <T : Number> KClass<T>.zeroOrNull(): T? =
-    when (this) {
-        Int::class -> 0 as T
-        Byte::class -> 0.toByte() as T
-        Short::class -> 0.toShort() as T
-        Long::class -> 0.toLong() as T
-        Double::class -> 0.toDouble() as T
-        Float::class -> 0.toFloat() as T
-        BigDecimal::class -> BigDecimal.ZERO as T
-        BigInteger::class -> BigInteger.ZERO as T
-        Number::class -> 0 as? T
-        else -> null
-    }
-
-@PublishedApi
-internal fun <T : Number> KClass<T>.zero(): T =
-    zeroOrNull() ?: throw NotImplementedError("Zero value for $this is not supported")
-
 internal fun <T> catchSilent(body: () -> T): T? =
     try {
         body()