fix: remove not supported plugin 'kotlin-android-extensions' in build.gradle

kotlin-android-extensions

```
The Android extensions ('kotlin-android-extensions') compiler plugin is no longer supported. Please use kotlin parcelize and view binding. More information: https://goo.gle/kotlin-android-extensions-deprecation FAILURE: Build failed with an exception. * What went wrong:
Execution failed for task ':xmartlabs_react-native-line:compileDebugKotlin'.
```

Author: JeffGuKang

android/build.gradle

@@ -22,7 +22,6 @@ repositories {
 
 apply plugin: "com.android.library"
 apply plugin: "kotlin-android"
-apply plugin: "kotlin-android-extensions"
 
 def safeExtGet(prop, fallback) {
     rootProject.ext.has(prop) ? rootProject.ext.get(prop) : fallback
@@ -53,4 +52,4 @@ dependencies {
     implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8:$kotlinVersion"
     implementation "org.jetbrains.kotlinx:kotlinx-coroutines-android:1.0.1"
     implementation "org.jetbrains.kotlinx:kotlinx-coroutines-core:1.0.1"
-}
+}