Update tests depending on part class naming

compiler/testData/codegen/topLevelMemberInvocation/functionDifferentPackage/1.kt

@@ -2,5 +2,5 @@ package a
 
 fun test1() {}
 
-// 2 INVOKESTATIC a/APackage.+\.test1 \(\)V
-// 1 INVOKESTATIC b/BPackage.+\.test2 \(\)V
+// 2 INVOKESTATIC a/_1Kt.test1 \(\)V
+// 1 INVOKESTATIC b/_2Kt.test2 \(\)V

compiler/testData/codegen/topLevelMemberInvocation/functionDifferentPackage/a1.kt

@@ -1,6 +0,0 @@
-package a
-
-fun test1() {}
-
-// 2 INVOKESTATIC a/A1Kt.test1 \(\)V
-// 1 INVOKESTATIC b/A2Kt.test2 \(\)V