Some detekt fixes

Author: Mr3zee

grpc/grpc-codec-kotlinx-serialization/src/commonMain/kotlin/kotlinx/rpc/grpc/codec/kotlinx/serialization/KotlinxSerializationCodecResolver.kt

@@ -52,7 +52,9 @@ private class KotlinxSerializationCodec<T>(
                 }
             }
 
-            else -> error("Only ${StringFormat::class.simpleName} and ${BinaryFormat::class.simpleName} are supported")
+            else -> {
+                error("Only ${StringFormat::class.simpleName} and ${BinaryFormat::class.simpleName} are supported")
+            }
         }
     }
 
@@ -66,7 +68,9 @@ private class KotlinxSerializationCodec<T>(
                 serialFormat.decodeFromByteArray(serializer, stream.readByteArray())
             }
 
-            else -> error("Only ${StringFormat::class.simpleName} and ${BinaryFormat::class.simpleName} are supported")
+            else -> {
+                error("Only ${StringFormat::class.simpleName} and ${BinaryFormat::class.simpleName} are supported")
+            }
         }
     }
 }

tests/compiler-plugin-tests/src/test/kotlin/kotlinx/rpc/codegen/test/runners/AbstractBoxTest.kt

@@ -6,7 +6,6 @@ package kotlinx.rpc.codegen.test.runners
 
 import org.jetbrains.kotlin.test.FirParser
 import org.jetbrains.kotlin.test.builders.TestConfigurationBuilder
-import org.jetbrains.kotlin.test.directives.CodegenTestDirectives
 import org.jetbrains.kotlin.test.directives.CodegenTestDirectives.DUMP_IR
 import org.jetbrains.kotlin.test.directives.ConfigurationDirectives.WITH_STDLIB
 import org.jetbrains.kotlin.test.directives.JvmEnvironmentConfigurationDirectives.WITH_REFLECT