Removed override annotations from overridden abstract methods.

briar-android/src/net/sf/briar/android/AndroidModule.java

...src/net/sf/briar/android/helloworld/HelloWorldModule.java

briar-core/src/net/sf/briar/clock/ClockModule.java

briar-core/src/net/sf/briar/crypto/CryptoModule.java

briar-core/src/net/sf/briar/db/DatabaseModule.java

briar-core/src/net/sf/briar/invitation/InvitationModule.java

briar-core/src/net/sf/briar/lifecycle/LifecycleModule.java

briar-core/src/net/sf/briar/messaging/MessagingModule.java

.../net/sf/briar/messaging/duplex/DuplexMessagingModule.java

...et/sf/briar/messaging/simplex/SimplexMessagingModule.java

briar-core/src/net/sf/briar/plugins/JavaSePluginsModule.java

briar-core/src/net/sf/briar/plugins/PluginsModule.java

...-core/src/net/sf/briar/reliability/ReliabilityModule.java

briar-core/src/net/sf/briar/serial/SerialModule.java

briar-core/src/net/sf/briar/transport/TransportModule.java

briar-tests/src/net/sf/briar/TestDatabaseModule.java

briar-tests/src/net/sf/briar/TestLifecycleModule.java

briar-tests/src/net/sf/briar/TestUiModule.java