Refactor localization and simplify HomeScreen functionality

- Removed English and Russian localization files, focusing solely on Turkmen.
- Simplified language initialization in i18n.ts to default to Turkmen.
- Cleaned up HomeScreen by removing modal for language selection and related state management.

app/(tabs)/home.tsx

@@ -1,4 +1,4 @@
-import { StyleSheet, ScrollView, I18nManager, Modal, Pressable } from 'react-native';
+import { StyleSheet, ScrollView } from 'react-native';
 import { Text, View } from '@/components/Themed';
 import FeatureCard from '@/components/FeatureCard';
 import PrayerTimeCard from '@/components/PrayerTimeCard';
@@ -12,16 +12,13 @@ import { useSafeAreaInsets } from 'react-native-safe-area-context';
 
 
 export default function HomeScreen() {
-  const [modalVisible, setModalVisible] = useState(false);
   const insets = useSafeAreaInsets();
 
   const changeLanguage = async (lang: 'en' | 'tk' | 'ru') => {
     if (!lang) return;
-    setModalVisible(false);
     if (lang === i18n.locale.substring(0, 2)) return;
     await AsyncStorage.setItem('user-language', lang);
     i18n.locale = lang;
-    I18nManager.forceRTL(false); // Assuming LTR for all three languages
     Updates.reloadAsync();
   };
 
@@ -44,31 +41,8 @@ export default function HomeScreen() {
       
       <View style={styles.header}>
         <Text style={styles.title}>{i18n.t('home')}</Text>
-        <Pressable onPress={() => setModalVisible(true)} style={pickerSelectStyles.inputIOS}>
-          <Text style={{ color: 'white' }}>{currentLanguage}</Text>
-        </Pressable>
       </View>
 
-      <Modal
-        animationType="slide"
-        transparent={true}
-        visible={modalVisible}
-        onRequestClose={() => {
-          setModalVisible(!modalVisible);
-        }}>
-        <Pressable style={styles.modalOverlay} onPress={() => setModalVisible(false)}>
-          <View style={styles.modalView}>
-            {languages.map((lang) => (
-              <Pressable
-                key={lang.value}
-                style={styles.modalButton}
-                onPress={() => changeLanguage(lang.value as 'en' | 'tk' | 'ru')}>
-                <Text style={styles.modalButtonText}>{lang.label}</Text>
-              </Pressable>
-            ))}
-          </View>
-        </Pressable>
-      </Modal>
       <ScrollView>
         <View style={styles.innerContainer}>
           {/* <FeatureCard