[README.md] Remove instrunction on how to add MavenCentral. It's already enabled by default

Author: ViliusSutkus89

README.md

@@ -69,22 +69,10 @@ Prefab support requires Android Gradle Plugin 4 or newer.
 [project level build.gradle](sampleapp/app/build.gradle) contains code to load the library as a dependency in Gradle.
 ```gradle
 dependencies {
-    // ...
     implementation 'com.viliussutkus89:tmpfile-android:3.0.4'
 }
 ```
 
-tmpfile-Android is distributed using [Maven Central](https://search.maven.org/artifact/com.viliussutkus89/tmpfile-android) repository.
-The repository needs to be added to the [top level build.gradle](sampleapp/build.gradle).
-```gradle
-allprojects {
-    repositories {
-        // ...
-        mavenCentral()
-    }
-}
-```
-
 #### Linking native binaries against libtmpfile.so
 
 Library is linked against in [CMake](sampleapp/app/src/main/cpp/CMakeLists.txt):
@@ -96,7 +84,6 @@ target_link_libraries(YOUR_LIBRARY_NAME tmpfile::tmpfile)
 Previously mentioned `find_package(tmpfile REQUIRED CONFIG)` requires Prefab feature to be enabled in [project level build.gradle](sampleapp/app/build.gradle):
 ```groovy
 android {
-    // ...
     buildFeatures {
         prefab true
     }