[BOOK-288] chore: 미사용 변수 제거

Author: seoyoon513

feature/record/src/main/kotlin/com/ninecraft/booket/feature/record/step/ImpressionStep.kt

@@ -32,7 +32,6 @@ import androidx.compose.ui.focus.FocusRequester
 import androidx.compose.ui.focus.focusRequester
 import androidx.compose.ui.focus.onFocusChanged
 import androidx.compose.ui.graphics.vector.ImageVector
-import androidx.compose.ui.platform.LocalSoftwareKeyboardController
 import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.res.vectorResource
 import androidx.compose.ui.text.input.ImeAction
@@ -66,7 +65,6 @@ fun ImpressionStep(
     val coroutineScope = rememberCoroutineScope()
     val impressionGuideBottomSheetState = rememberModalBottomSheetState(skipPartiallyExpanded = true)
     val focusRequester = remember { FocusRequester() }
-    val keyboardController = LocalSoftwareKeyboardController.current
     val scrollState = rememberScrollState()
     val bringIntoViewRequester = remember { BringIntoViewRequester() }
     val keyboardState by rememberKeyboardVisible()