Do not infer artifact version from build.txt #KT-21150

compiler/util/src/org/jetbrains/kotlin/utils/KotlinPaths.java

@@ -63,6 +63,4 @@ public interface KotlinPaths {
     @NotNull
     File getCompilerPath();
 
-    @NotNull
-    File getBuildNumberFile();
 }

compiler/util/src/org/jetbrains/kotlin/utils/KotlinPathsFromHomeDir.java

@@ -112,12 +112,6 @@ public class KotlinPathsFromHomeDir implements KotlinPaths {
         return getLibraryFile(PathUtil.KOTLIN_COMPILER_JAR);
     }
 
-    @NotNull
-    @Override
-    public File getBuildNumberFile() {
-        return new File(homePath, "build.txt");
-    }
-
     @NotNull
     private File getLibraryFile(@NotNull String fileName) {
         return new File(getLibPath(), fileName);

idea/src/org/jetbrains/kotlin/idea/versions/KotlinRuntimeLibraryUtil.kt

@@ -41,6 +41,7 @@ import com.intellij.util.indexing.ScalarIndexExtension
 import com.intellij.util.text.VersionComparatorUtil
 import org.jetbrains.kotlin.builtins.KotlinBuiltIns
 import org.jetbrains.kotlin.config.JvmTarget
+import org.jetbrains.kotlin.config.KotlinCompilerVersion
 import org.jetbrains.kotlin.idea.KotlinPluginUtil
 import org.jetbrains.kotlin.idea.configuration.*
 import org.jetbrains.kotlin.idea.framework.JavaRuntimeDetectionUtil
@@ -213,17 +214,12 @@ enum class LibraryJarDescriptor(val jarName: String,
     fun getPathInPlugin() = getPath(PathUtil.kotlinPathsForIdeaPlugin)
 }
 
-fun bundledRuntimeVersion(): String {
-    return bundledRuntimeBuildNumber ?: pluginRuntimeVersion(KotlinPluginUtil.getPluginVersion())
-}
+fun bundledRuntimeVersion(): String = KotlinCompilerVersion.VERSION
 
-private val bundledRuntimeBuildNumber: String? by lazy {
-    val file = PathUtil.kotlinPathsForIdeaPlugin.buildNumberFile
-    if (file.exists()) file.readText().trim() else null
-}
 
 private val PLUGIN_VERSIONS_SEPARATORS = arrayOf("Idea", "IJ", "release", "dev", "Studio")
 
+// TODO: Used only in tests, can be removed
 fun pluginRuntimeVersion(pluginVersion: String): String {
     var placeToSplit = -1