Remove leftovers of platformName and platformStatic in test data

Drop unnecessary imports, rename some tests

compiler/testData/diagnostics/testsWithStdLib/annotations/jvmStatic/constOrJvmFieldProperty.kt

@@ -0,0 +1,18 @@
+class A {
+
+    companion object {
+
+        <!JVM_STATIC_ON_CONST_OR_JVM_FIELD!>@JvmStatic const val z<!> = 1;
+
+        <!JVM_STATIC_ON_CONST_OR_JVM_FIELD!>@JvmStatic @JvmField val x<!> = 1;
+    }
+
+}
+
+
+object B {
+
+    <!JVM_STATIC_ON_CONST_OR_JVM_FIELD!>@JvmStatic const val z<!> = 1;
+
+    <!JVM_STATIC_ON_CONST_OR_JVM_FIELD!>@JvmStatic @JvmField val x<!> = 1;
+}