test: de-poison unit suite — drop static Dispatchers mocks, kill leaked WS timers (#833)

Co-authored-by: M57 <hy4ri@users.noreply.github.com>

app/src/test/java/com/m57/hermescontrol/ui/gateway/GatewayViewModelTest.kt

@@ -7,7 +7,6 @@ import io.mockk.coEvery
 import io.mockk.every
 import io.mockk.mockk
 import io.mockk.mockkObject
-import io.mockk.mockkStatic
 import io.mockk.unmockkAll
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.ExperimentalCoroutinesApi
@@ -34,8 +33,6 @@ class GatewayViewModelTest {
     @Before
     fun setUp() {
         Dispatchers.setMain(testDispatcher)
-        mockkStatic(Dispatchers::class)
-        every { Dispatchers.IO } returns testDispatcher
 
         mockApi = mockk()
         mockkObject(ApiClient)