Clean up some Qodana recommendations

Author: code-asher

src/main/kotlin/com/coder/gateway/CoderGatewayConnectionProvider.kt

@@ -21,17 +21,13 @@ import com.intellij.openapi.application.ApplicationManager
 import com.intellij.openapi.components.service
 import com.intellij.openapi.diagnostic.Logger
 import com.intellij.openapi.ui.DialogWrapper
-import com.intellij.openapi.wm.impl.welcomeScreen.WelcomeScreenUIManager
 import com.intellij.ui.dsl.builder.panel
 import com.intellij.util.ui.JBUI
 import com.jetbrains.gateway.api.ConnectionRequestor
 import com.jetbrains.gateway.api.GatewayConnectionHandle
 import com.jetbrains.gateway.api.GatewayConnectionProvider
 import java.net.URL
-import javax.swing.Action
-import javax.swing.JButton
 import javax.swing.JComponent
-import javax.swing.JPanel
 import javax.swing.border.Border
 
 // In addition to `type`, these are the keys that we support in our Gateway

src/main/kotlin/com/coder/gateway/CoderRemoteConnectionHandle.kt

@@ -288,7 +288,7 @@ class CoderRemoteConnectionHandle {
                 conn.instanceFollowRedirects = false
                 conn.connect()
                 val code = conn.responseCode
-                val nextLocation = conn.getHeaderField("Location");
+                val nextLocation = conn.getHeaderField("Location")
                 conn.disconnect()
                 // Redirects are triggered by any code starting with 3 plus a
                 // location header.

src/main/kotlin/com/coder/gateway/services/CoderSettingsService.kt

@@ -15,4 +15,4 @@ import com.intellij.openapi.components.service
  * prefer using CoderSettingsService over CoderSettingsState directly.
  */
 @Service(Service.Level.APP)
-class CoderSettingsService() : CoderSettings(service<CoderSettingsState>())
+class CoderSettingsService : CoderSettings(service<CoderSettingsState>())

src/main/kotlin/com/coder/gateway/views/steps/CoderWizardStep.kt

@@ -6,7 +6,6 @@ import com.intellij.openapi.wm.impl.welcomeScreen.WelcomeScreenUIManager
 import com.intellij.ui.dsl.builder.AlignX
 import com.intellij.ui.dsl.builder.BottomGap
 import com.intellij.ui.dsl.builder.RightGap
-import com.intellij.ui.dsl.builder.TopGap
 import com.intellij.ui.dsl.builder.panel
 import com.intellij.util.ui.JBUI
 import com.intellij.util.ui.components.BorderLayoutPanel

src/main/kotlin/com/coder/gateway/views/steps/CoderWorkspaceStepView.kt

@@ -313,7 +313,7 @@ class CoderWorkspaceStepView(
             executor.getInstalledIDEs().map { ide -> IdeWithStatus(ide.product, ide.buildNumber, IdeStatus.ALREADY_INSTALLED, null, ide.pathToIde, ide.presentableVersion, ide.remoteDevType) }
         }
         val idesWithStatusJob = cs.async(Dispatchers.IO) {
-            IntelliJPlatformProduct.values()
+            IntelliJPlatformProduct.entries
                 .filter { it.showInGateway }
                 .flatMap { CachingProductsJsonWrapper.getInstance().getAvailableIdes(it, workspaceOS) }
                 .map { ide -> IdeWithStatus(ide.product, ide.buildNumber, IdeStatus.DOWNLOAD, ide.download, null, ide.presentableVersion, ide.remoteDevType) }