Revert "更新gradle插件版本"

This reverts commit 3d3e2ff.

Reason for revert: 撤销无效修改

Change-Id: Ieaf45b1e20a7286096b23ac320b1bc0c55a4ae5e

Author: archurtan

build.gradle

@@ -6,13 +6,12 @@ buildscript {
     repositories {
         google()
         jcenter()
-        mavenCentral()
         maven{
             url "https://oss.sonatype.org/content/groups/public"
         }
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:4.2.1'
+        classpath 'com.android.tools.build:gradle:3.5.0'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
         classpath 'com.google.gms:google-services:4.3.3'
         classpath 'com.google.firebase:firebase-crashlytics-gradle:2.3.0'
@@ -26,7 +25,6 @@ allprojects {
     repositories {
         google()
         jcenter()
-        mavenCentral()
         // 添加如下 maven 仓库地址--- 腾讯对象存储
         maven {
             url "https://dl.bintray.com/tencentqcloudterminal/maven"

gradle/wrapper/gradle-wrapper.properties

@@ -3,5 +3,5 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-6.7.1-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.3-all.zip
 android.enableUnitTestBinaryResources=true