Use IDEA 143.1960 built with master kotlin branch.

Remove tweaks required to bootstrap packages.
Restore non-star imports of kotlin.text.Charsets.

compiler/tests/org/jetbrains/kotlin/cli/CliBaseTest.java

@@ -20,8 +20,7 @@ import com.intellij.openapi.util.text.StringUtil;
 import com.intellij.util.ArrayUtil;
 import com.intellij.util.Function;
 import com.intellij.util.containers.ContainerUtil;
-import kotlin.*;
-import kotlin.text.*;
+import kotlin.text.Charsets;
 import kotlin.Pair;
 import kotlin.io.FilesKt;
 import org.jetbrains.annotations.NotNull;