coding style: src: remove empty lines at end of text files

Empty lines at end of text files are useless.
Remove them.

Change-Id: Ibac9b36682d58f81e34ca2b51e6260e7d472fb0e
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: http://openocd.zylin.com/5172
Tested-by: jenkins

src/target/arc_jtag.c

@@ -539,4 +539,3 @@ exit:
 
 	return retval;
 }
-

src/target/arm_cti.c

@@ -641,4 +641,3 @@ int cti_register_commands(struct command_context *cmd_ctx)
 {
 	return register_commands(cmd_ctx, NULL, cti_command_handlers);
 }
-

src/target/avr32_jtag.c

@@ -369,4 +369,3 @@ int avr32_ocd_clearbits(struct avr32_jtag *jtag, int reg, uint32_t bits)
 
 	return ERROR_OK;
 }
-

src/target/nds32_cmd.c

@@ -1123,4 +1123,3 @@ const struct command_registration nds32_command_handlers[] = {
 	},
 	COMMAND_REGISTRATION_DONE
 };
-