Remove leftovers of platformName and platformStatic in test data

Drop unnecessary imports, rename some tests

compiler/testData/codegen/boxWithStdlib/reflection/mapping/jvmStatic/companionObjectFunction.kt

@@ -1,11 +1,11 @@
-import kotlin.jvm.JvmStatic as static
 import kotlin.reflect.KFunction
 import kotlin.reflect.jvm.*
 import kotlin.test.*
 
 class C {
     companion object {
-        @static fun foo(s: String): Int = s.length
+        @JvmStatic
+        fun foo(s: String): Int = s.length
     }
 }
 

compiler/testData/codegen/boxWithStdlib/reflection/mapping/jvmStatic/objectFunction.kt

@@ -1,10 +1,10 @@
-import kotlin.jvm.JvmStatic as static
 import kotlin.reflect.KFunction
 import kotlin.reflect.jvm.*
 import kotlin.test.assertEquals
 
 object O {
-    @static fun foo(s: String): Int = s.length
+    @JvmStatic
+    fun foo(s: String): Int = s.length
 }
 
 fun box(): String {

compiler/testData/codegen/boxWithStdlib/reflection/mapping/types/memberFunctions.kt

@@ -1,4 +1,3 @@
-import kotlin.jvm.JvmStatic as static
 import kotlin.reflect.jvm.javaType
 import kotlin.test.assertEquals
 
@@ -7,7 +6,8 @@ class A {
 }
 
 object O {
-    @static fun bar(a: A): String = ""
+    @JvmStatic
+    fun bar(a: A): String = ""
 }
 
 fun box(): String {

compiler/testData/codegen/boxWithStdlib/reflection/mapping/types/parameterizedTypes.kt

@@ -1,7 +1,6 @@
 // FULL_JDK
 
 import java.lang.reflect.ParameterizedType
-import kotlin.jvm.JvmStatic as static
 import kotlin.reflect.*
 import kotlin.reflect.jvm.javaType
 import kotlin.test.assertEquals
@@ -9,7 +8,8 @@ import kotlin.test.assertEquals
 class A(private var foo: List<String>)
 
 object O {
-    private @static var bar: List<String> = listOf()
+    @JvmStatic
+    private var bar: List<String> = listOf()
 }
 
 fun topLevel(): List<String> = listOf()

compiler/testData/codegen/boxWithStdlib/reflection/mapping/types/propertyAccessors.kt

@@ -1,4 +1,3 @@
-import kotlin.jvm.JvmStatic as static
 import kotlin.reflect.KMutableProperty
 import kotlin.reflect.jvm.javaType
 import kotlin.test.assertEquals
@@ -6,7 +5,8 @@ import kotlin.test.assertEquals
 class A(private var foo: String)
 
 object O {
-    private @static var bar: String = ""
+    @JvmStatic
+    private var bar: String = ""
 }
 
 fun box(): String {