Minor. removed functions which declared in Standard.kt from diagnostic testdata.

Removed declaration for functions: TODO, run, with, apply, let.

compiler/testData/diagnostics/tests/labels/kt3920.kt

@@ -7,5 +7,3 @@ fun test() {
         2
     }
 }
-
-fun <T> run(f: () -> T): T = f()

compiler/testData/diagnostics/tests/labels/kt3920.txt

@@ -1,4 +1,3 @@
 package
 
-public fun </*0*/ T> run(/*0*/ f: () -> T): T
 public fun test(): kotlin.Unit