[TESTS] Remove ignore js backend directive from some tailRecursion tests

These tests were falling due to inserted diagnostics. New test
infrastructure can remove them before running test.

compiler/testData/codegen/box/diagnostics/functions/tailRecursion/recursiveCallInLocalFunction.kt

@@ -2,9 +2,6 @@
 // WASM_MUTE_REASON: IGNORED_IN_JS
 // IGNORE_BACKEND: JS_IR
 // IGNORE_BACKEND: JS_IR_ES6
-// TODO: muted automatically, investigate should it be ran for JS or not
-// DONT_RUN_GENERATED_CODE: JS
-// IGNORE_BACKEND: JS
 
 <!NO_TAIL_CALLS_FOUND!>tailrec<!> fun foo() {
     fun bar() {