use mavenCentral in light of JCenter shutdown

aosp/boot_signer/build.gradle.kts

@@ -5,7 +5,7 @@ plugins {
 }
 
 repositories {
-    jcenter()
+    mavenCentral()
 }
 
 dependencies {

bbootimg/build.gradle.kts

@@ -6,7 +6,7 @@ plugins {
 }
 
 repositories {
-    jcenter()
+    mavenCentral()
 }
 
 dependencies {

build.gradle.kts

@@ -15,7 +15,7 @@ if (parseGradleVersion(gradle.gradleVersion) < 6) {
 
 buildscript {
     repositories {
-        jcenter()
+        mavenCentral()
     }
     dependencies {
         classpath("org.apache.commons:commons-exec:1.3")

tools/gfw.sh

@@ -1,50 +0,0 @@
-#! /bin/sh
-# speed up with mirrors within the biggest LAN
-
-git apply - <<EOF
-
-diff --git a/aosp/boot_signer/build.gradle.kts b/aosp/boot_signer/build.gradle.kts
-index 0472c6e..788257d 100644
---- a/aosp/boot_signer/build.gradle.kts
-+++ b/aosp/boot_signer/build.gradle.kts
-@@ -5,7 +5,8 @@ plugins {
- }
- 
- repositories {
--    jcenter()
-+    maven { url = uri("http://maven.aliyun.com/nexus/content/groups/public/") }
-+    maven { url = uri("http://maven.aliyun.com/nexus/content/repositories/jcenter") }
- }
- 
- dependencies {
-diff --git a/bbootimg/build.gradle.kts b/bbootimg/build.gradle.kts
-index 3362dd7..9906c00 100644
---- a/bbootimg/build.gradle.kts
-+++ b/bbootimg/build.gradle.kts
-@@ -6,7 +6,8 @@ plugins {
- }
- 
- repositories {
--    jcenter()
-+    maven { url = uri("http://maven.aliyun.com/nexus/content/groups/public/") }
-+    maven { url = uri("http://maven.aliyun.com/nexus/content/repositories/jcenter") }
- }
- 
- dependencies {
-diff --git a/build.gradle.kts b/build.gradle.kts
-index bf076be..973c84a 100644
---- a/build.gradle.kts
-+++ b/build.gradle.kts
-@@ -14,7 +14,8 @@ if (parseGradleVersion(gradle.gradleVersion) < 5) {
- 
- buildscript {
-     repositories {
--        jcenter()
-+        maven { url = uri("http://maven.aliyun.com/nexus/content/groups/public/") }
-+        maven { url = uri("http://maven.aliyun.com/nexus/content/repositories/jcenter") }
-     }
-     dependencies {
-         classpath("org.apache.commons:commons-exec:1.3")
-
-EOF
-