Remove build time from app.

It was never needed, slows down development builds, and is annoying for
reproducible builds

app/build.gradle

@@ -24,7 +24,6 @@ android {
         versionCode 51
         versionName "1.0.1"
 
-        buildConfigField "long", "buildTime", System.currentTimeMillis() + "L"
         buildConfigField "boolean", "customCerts", "true"
     }
 

app/src/main/java/com/etesync/syncadapter/HttpClient.kt

@@ -33,8 +33,7 @@ object HttpClient {
     private val userAgent: String
 
     init {
-        val date = SimpleDateFormat("yyyy/MM/dd", Locale.US).format(Date(BuildConfig.buildTime))
-        userAgent = "${App.appName}/${BuildConfig.VERSION_NAME} (${date}; okhttp3) Android/${Build.VERSION.RELEASE}"
+        userAgent = "${App.appName}/${BuildConfig.VERSION_NAME} (okhttp3) Android/${Build.VERSION.RELEASE}"
     }
 
     fun create(context: Context?, logger: Logger, host: String?, token: String): OkHttpClient {

app/src/main/java/com/etesync/syncadapter/ui/AboutActivity.kt

@@ -159,7 +159,7 @@ class AboutActivity : BaseActivity() {
 
         private val components = arrayOf(ComponentInfo(
                 App.appName, BuildConfig.VERSION_NAME, Constants.webUri.toString(),
-                DateFormatUtils.format(BuildConfig.buildTime, "yyyy") + " Tom Hacohen",
+                "Tom Hacohen",
                 R.string.about_license_info_no_warranty, "gpl-3.0-standalone.html"
         ), ComponentInfo(
                 "DAVdroid", "(forked from)", "https://syncadapter.bitfire.at",

app/src/main/java/com/etesync/syncadapter/ui/DebugInfoActivity.kt

@@ -141,7 +141,7 @@ class DebugInfoActivity : BaseActivity(), LoaderManager.LoaderCallbacks<String>
                 var installedFrom = pm.getInstallerPackageName(BuildConfig.APPLICATION_ID)
                 if (TextUtils.isEmpty(installedFrom))
                     installedFrom = "APK (directly)"
-                report.append("\nSOFTWARE INFORMATION\n" + "EteSync version: ").append(BuildConfig.VERSION_NAME).append(" (").append(BuildConfig.VERSION_CODE).append(") ").append(Date(BuildConfig.buildTime)).append("\n")
+                report.append("\nSOFTWARE INFORMATION\n" + "EteSync version: ").append(BuildConfig.VERSION_NAME).append(" (").append(BuildConfig.VERSION_CODE).append(") ").append("\n")
                         .append("Installed from: ").append(installedFrom).append("\n")
             } catch (ex: Exception) {
                 App.log.log(Level.SEVERE, "Couldn't get software information", ex)