Remove jcenter / bintray from gradle (#651)

* Remove jcenter / bintray from gradle

Our build was referencing the old bintray repositories. This would 403 and make the build much slower as at retried 5 times against the broken URL.

* Update CHANGELOG.md

Co-authored-by: John DiSanti <jdisanti@amazon.com>

Co-authored-by: John DiSanti <jdisanti@amazon.com>

CHANGELOG.md

@@ -11,6 +11,7 @@ vNext (Month Day, Year)
 - :bug: Fix name collision that occurred when a model had both a union and a structure named `Result` (#643)
 - Add initial implementation of a default provider chain. (#650)
 - Update smithy-client to simplify creating HTTP/HTTPS connectors (#650)
+- Remove Bintray/JCenter source from gradle build. (#651)
 
 v0.20 (August 10th, 2021)
 --------------------------

build.gradle.kts

@@ -5,7 +5,6 @@
 buildscript {
     repositories {
         google()
-        jcenter()
     }
 
     val kotlinVersion: String by project
@@ -23,7 +22,6 @@ allprojects {
     repositories {
         mavenLocal()
         mavenCentral()
-        jcenter()
         google()
     }
 }

settings.gradle.kts

@@ -5,7 +5,6 @@
 
 pluginManagement {
     repositories {
-        maven("https://dl.bintray.com/kotlin/kotlin-eap")
         mavenCentral()
         maven("https://plugins.gradle.org/m2/")
         google()