delete fungsi yang tidak digunakan pada app.py and visualization.py

app.py

@@ -31,7 +31,6 @@ from visualization import (
     show_sentiment_by_semester,
     show_sentiment_by_prodi,
     show_sentiment_by_top10_matkul,
-    show_sentiment_stacked_percentage,
 )
 from preprocessing import text_preprocessing_pipeline
 

visualization.py

@@ -1,5 +1,5 @@
 """
-Modul visualization.py
+visualization.py
 ----------------------
 Berisi fungsi-fungsi untuk menampilkan berbagai visualisasi data kritik dan saran
 dalam bentuk bar chart, pie chart, serta distribusi berdasarkan tahun, semester,
@@ -325,44 +325,3 @@ def show_sentiment_by_top10_matkul(df, aspek_columns):
     )
     st.plotly_chart(fig, use_container_width=True, config=config_options)
     return True
-
-
-def show_sentiment_stacked_percentage(df, aspek_columns):
-    """Menampilkan stacked bar chart dengan persentase sentimen per aspek."""
-
-    if df.empty or not set(aspek_columns).issubset(df.columns):
-        st.warning("Data atau kolom aspek tidak tersedia.")
-        return
-
-    df_long = df.melt(
-        value_vars=aspek_columns,
-        var_name="aspek",
-        value_name="sentimen"
-    )
-
-    # Hitung persentase
-    count_data = df_long.groupby(
-        ['aspek', 'sentimen']).size().reset_index(name='jumlah')
-    total_per_aspek = count_data.groupby('aspek')['jumlah'].sum().reset_index()
-    total_per_aspek.columns = ['aspek', 'total']
-    count_data = count_data.merge(total_per_aspek, on='aspek')
-    count_data['persentase'] = (
-        count_data['jumlah'] / count_data['total']) * 100
-
-    fig = px.bar(
-        count_data,
-        x="aspek",
-        y="persentase",
-        color="sentimen",
-        title="Persentase Distribusi Sentimen per Aspek",
-        color_discrete_map=sentimen_palette,
-        category_orders={
-            "sentimen": category_order,
-            "aspek": aspek_columns
-        }
-    )
-    fig.update_layout(
-        yaxis_title="Persentase (%)",
-        xaxis_title="Aspek"
-    )
-    st.plotly_chart(fig, use_container_width=True, config=config_options)