[ANCHOR-523] Delete duplicate test classes (#1197)

### Description

This deletes some duplicate test classes in the extended test project.
The SEP-24 test can be deleted once the extended tests have been
converted to the new Junit style. The SEP-31 test should also be moved
into the essential tests once converted as well.

### Context

Test pipeline refactoring

### Testing

- `./gradlew test`

### Documentation

N/A

### Known limitations

N/A

extended-tests/src/test/kotlin/org/stellar/anchor/platform/AbstractIntegrationTest.kt

@@ -3,7 +3,10 @@ package org.stellar.anchor.platform
 import io.ktor.client.plugins.*
 import io.ktor.http.*
 import kotlinx.coroutines.runBlocking
-import org.stellar.anchor.platform.test.*
+import org.stellar.anchor.platform.test.CustodyApiTests
+import org.stellar.anchor.platform.test.PlatformApiCustodyTests
+import org.stellar.anchor.platform.test.Sep24BaseEnd2EndTest
+import org.stellar.anchor.platform.test.Sep31End2EndTests
 import org.stellar.anchor.util.Sep1Helper
 import org.stellar.walletsdk.ApplicationConfiguration
 import org.stellar.walletsdk.StellarConfiguration
@@ -30,11 +33,11 @@ open class AbstractIntegrationTest(private val config: TestConfig) {
   val testProfileRunner = TestProfileExecutor(config)
   lateinit var platformApiCustodyTests: PlatformApiCustodyTests
   lateinit var custodyApiTests: CustodyApiTests
-  lateinit var sep24RpcE2eTests: Sep24RpcEnd2EndTests
-  lateinit var sep24CustodyE2eTests: Sep24CustodyEnd2EndTests
-  lateinit var sep24CustodyRpcE2eTests: Sep24CustodyRpcEnd2EndTests
-  lateinit var sep31RpcE2eTests: Sep31RpcEnd2EndTests
-  lateinit var sep31CustodyRpcE2eTests: Sep31CustodyRpcEnd2EndTests
+  lateinit var sep24RpcE2eTests: Sep24BaseEnd2EndTest
+  lateinit var sep24CustodyE2eTests: Sep24BaseEnd2EndTest
+  lateinit var sep24CustodyRpcE2eTests: Sep24BaseEnd2EndTest
+  lateinit var sep31RpcE2eTests: Sep31End2EndTests
+  lateinit var sep31CustodyRpcE2eTests: Sep31End2EndTests
 
   fun setUp(envMap: Map<String, String>) {
     envMap.forEach { (key, value) -> config.env[key] = value }
@@ -56,11 +59,11 @@ open class AbstractIntegrationTest(private val config: TestConfig) {
 
     platformApiCustodyTests = PlatformApiCustodyTests(config, toml, jwt)
     custodyApiTests = CustodyApiTests(config, toml, jwt)
-    sep24CustodyE2eTests = Sep24CustodyEnd2EndTests(config, jwt)
-    sep24RpcE2eTests = Sep24RpcEnd2EndTests(config, jwt)
-    sep24CustodyRpcE2eTests = Sep24CustodyRpcEnd2EndTests(config, jwt)
-    sep31RpcE2eTests = Sep31RpcEnd2EndTests(config, toml, jwt)
-    sep31CustodyRpcE2eTests = Sep31CustodyRpcEnd2EndTests(config, toml, jwt)
+    sep24CustodyE2eTests = Sep24BaseEnd2EndTest(config, jwt)
+    sep24RpcE2eTests = Sep24BaseEnd2EndTest(config, jwt)
+    sep24CustodyRpcE2eTests = Sep24BaseEnd2EndTest(config, jwt)
+    sep31RpcE2eTests = Sep31End2EndTests(config, toml, jwt)
+    sep31CustodyRpcE2eTests = Sep31End2EndTests(config, toml, jwt)
   }
 
   private suspend fun auth(): String {

extended-tests/src/test/kotlin/org/stellar/anchor/platform/test/Sep24RpcEnd2EndTests.kt → extended-tests/src/test/kotlin/org/stellar/anchor/platform/test/Sep24BaseEnd2EndTest.kt

@@ -40,7 +40,8 @@ import org.stellar.walletsdk.horizon.SigningKeyPair
 import org.stellar.walletsdk.horizon.sign
 import org.stellar.walletsdk.horizon.transaction.transferWithdrawalTransaction
 
-class Sep24RpcEnd2EndTests(config: TestConfig, val jwt: String) {
+/** TODO: This should be replaced by Sep24End2EndTest */
+class Sep24BaseEnd2EndTest(config: TestConfig, val jwt: String) {
   private val walletSecretKey = System.getenv("WALLET_SECRET_KEY") ?: CLIENT_WALLET_SECRET
   private val keypair = SigningKeyPair.fromSecret(walletSecretKey)
   private val wallet =