fix(dev): remove unused import

Author: tverney

plugins/amazonq/chat/jetbrains-community/src/software/aws/toolkits/jetbrains/services/amazonqFeatureDev/session/CodeGenerationState.kt

@@ -19,7 +19,6 @@ import software.aws.toolkits.jetbrains.services.amazonqFeatureDev.PromptRefusalE
 import software.aws.toolkits.jetbrains.services.amazonqFeatureDev.ThrottlingException
 import software.aws.toolkits.jetbrains.services.amazonqFeatureDev.messages.sendAnswerPart
 import software.aws.toolkits.jetbrains.services.amazonqFeatureDev.messages.sendUpdatePlaceholder
-import software.aws.toolkits.jetbrains.services.amazonqFeatureDev.noChangeRequiredException
 import software.aws.toolkits.jetbrains.services.cwc.controller.chat.telemetry.getStartUrl
 import software.aws.toolkits.resources.message
 import software.aws.toolkits.telemetry.AmazonqTelemetry