Removed sat track tail from the map, minor refactoring

app/src/test/java/com/rtbishop/look4sat/CoroutineTestRule.kt

@@ -1,42 +0,0 @@
-/*
- * Look4Sat. Amateur radio satellite tracker and pass predictor.
- * Copyright (C) 2019-2021 Arty Bishop (bishop.arty@gmail.com)
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <https://www.gnu.org/licenses/>.
- */
-package com.rtbishop.look4sat
-
-import kotlinx.coroutines.Dispatchers
-import kotlinx.coroutines.ExperimentalCoroutinesApi
-import kotlinx.coroutines.test.TestCoroutineDispatcher
-import kotlinx.coroutines.test.resetMain
-import kotlinx.coroutines.test.setMain
-import org.junit.rules.TestWatcher
-import org.junit.runner.Description
-
-@ExperimentalCoroutinesApi
-class CoroutineTestRule(private val dispatcher: TestCoroutineDispatcher = TestCoroutineDispatcher()) :
-    TestWatcher() {
-    
-    override fun starting(description: Description?) {
-        super.starting(description)
-        Dispatchers.setMain(dispatcher)
-    }
-    
-    override fun finished(description: Description?) {
-        super.finished(description)
-        Dispatchers.resetMain()
-        dispatcher.cleanupTestCoroutines()
-    }
-}