remove unnecessary casts (eclipse)

apps/i2psnark/java/src/org/klomp/snark/MetaInfo.java

.../i2psnark/java/src/org/klomp/snark/PeerConnectionOut.java

apps/i2psnark/java/src/org/klomp/snark/SnarkManager.java

apps/i2psnark/java/src/org/klomp/snark/Storage.java

...2psnark/java/src/org/klomp/snark/web/I2PSnarkServlet.java

apps/i2ptunnel/java/src/net/i2p/i2ptunnel/I2PTunnel.java

...sole/java/src/net/i2p/router/web/ConfigTunnelsHelper.java

...sole/java/src/net/i2p/router/web/PluginUpdateHandler.java

...rconsole/java/src/net/i2p/router/web/SummaryListener.java

...erconsole/java/src/net/i2p/router/web/TunnelRenderer.java

...terconsole/java/src/net/i2p/router/web/UpdateHandler.java

apps/sam/java/src/net/i2p/sam/SAMBridge.java

apps/sam/java/src/net/i2p/sam/SAMHandlerFactory.java

apps/sam/java/src/net/i2p/sam/SAMStreamSession.java

apps/sam/java/src/net/i2p/sam/SAMv2StreamSession.java

apps/sam/java/src/net/i2p/sam/client/SAMEventHandler.java

apps/sam/java/src/net/i2p/sam/client/SAMStreamSend.java

apps/sam/java/src/net/i2p/sam/client/SAMStreamSink.java

apps/susimail/src/src/i2p/susi/webmail/WebMail.java

core/java/src/gnu/crypto/hash/Sha256Standalone.java