Revert "am: Notify zygote of font change in ActivityManagerService"

- Breaks font theme service
This reverts commit 282c3a4294508a6cb21aee23779fb4173a4a5308.

Author: westcripp

services/core/java/com/android/server/am/ActivityManagerService.java

@@ -17854,11 +17854,6 @@ boolean updateConfigurationLocked(Configuration values,
                             !values.themeConfig.equals(mConfiguration.themeConfig));
                 }
 
-                if ((changes & ActivityInfo.CONFIG_THEME_FONT) != 0) {
-                    // Notify zygote that themes need a refresh
-                    SystemProperties.set(PROP_REFRESH_THEME, "1");
-                }
-
                 mConfigurationSeq++;
                 if (mConfigurationSeq <= 0) {
                     mConfigurationSeq = 1;