Changed gradle files

Author: Lezh1k

app/build.gradle

@@ -25,16 +25,7 @@ android {
     }
 }
 
-ext {
-    supportLibraryVersion = "26.1.0"
-}
-
 dependencies {
-    api "com.android.support:appcompat-v7:${supportLibraryVersion}"
-    api "com.android.support:support-v4:${supportLibraryVersion}"
-    api "com.android.support:design:${supportLibraryVersion}"
-    api "com.android.support:recyclerview-v7:${supportLibraryVersion}"
-
     implementation fileTree(dir: 'libs', include: ['*.jar'])
     implementation 'com.android.support.constraint:constraint-layout:1.1.3'
     testImplementation 'junit:junit:4.12'

build.gradle

@@ -3,9 +3,13 @@
 buildscript {
 
     repositories {
+        mavenCentral()
+        maven {
+            url "https://maven.google.com"
+        }
         google()
         jcenter()
-        mavenCentral()
+
     }
     dependencies {
         classpath 'com.android.tools.build:gradle:3.1.4'
@@ -18,6 +22,7 @@ buildscript {
 
 allprojects {
     repositories {
+        mavenCentral()
         maven {
             url "https://maven.google.com"
         }