remove JAVA_OPTS from docker-compose.yml (FINERACT-900) (#773)

docker-compose.yml

@@ -43,7 +43,6 @@ services:
     depends_on:
       - fineractmysql
     environment:
-      - JAVA_OPTS=-Djava.awt.headless=true -XX:+UseG1GC -Dfile.encoding=UTF-8
       - DRIVERCLASS_NAME=org.drizzle.jdbc.DrizzleDriver
       - PROTOCOL=jdbc
       - SUB_PROTOCOL=mysql:thin
@@ -59,5 +58,5 @@ services:
 # https://issues.apache.org/jira/browse/FINERACT-762
 # To use an altnerative JDBC driver (which is faster, but not allowed to be default in Apache distribution)
 # replace org.drizzle.jdbc.DrizzleDriver with com.mysql.jdbc.Driver in DRIVERCLASS_NAME and fineract_tenants_driver,
-# and remove ":thin:" from PROTOCOL and fineract_tenants_url.  Note that the mysql-connector-java-*.jar is already
+# and remove ":thin:" from SUB_PROTOCOL and fineract_tenants_url.  Note that the mysql-connector-java-*.jar is already
 # bundled in the container by the Dockerfile, but just not used by default.