Merge pull request #757 from Kotlin/revert-756-value-counts-test

Revert "Add a test for valueCounts"

Author: koperagen

core/src/test/kotlin/org/jetbrains/kotlinx/dataframe/testSets/person/DataColumnTests.kt

@@ -1,13 +1,10 @@
 package org.jetbrains.kotlinx.dataframe.testSets.person
 
 import io.kotest.matchers.shouldBe
-import org.jetbrains.kotlinx.dataframe.api.columnOf
-import org.jetbrains.kotlinx.dataframe.api.count
 import org.jetbrains.kotlinx.dataframe.api.sort
 import org.jetbrains.kotlinx.dataframe.api.sortBy
 import org.jetbrains.kotlinx.dataframe.api.sortByDesc
 import org.jetbrains.kotlinx.dataframe.api.sortDesc
-import org.jetbrains.kotlinx.dataframe.api.valueCounts
 import org.junit.Test
 
 class DataColumnTests : BaseTest() {
@@ -17,12 +14,4 @@ class DataColumnTests : BaseTest() {
         typed.age.sort() shouldBe typed.sortBy { age }.age
         typed.age.sortDesc() shouldBe typed.sortByDesc { age }.age
     }
-
-    @Test
-    fun `value counts`() {
-        val languages by columnOf("Kotlin", "Kotlin", null, null, "C++")
-        val languageCounts = languages.valueCounts()
-        languageCounts[languages].values() shouldBe listOf("Kotlin", "C++")
-        languageCounts.count shouldBe listOf(2, 1)
-    }
 }