rtc: cpcap: drop unused module alias

The driver only supports OF probe so drop the unused platform module
alias.

Fixes: dd3bf50 ("rtc: cpcap: new rtc driver")
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Link: https://lore.kernel.org/r/20250423130318.31244-3-johan+linaro@kernel.org
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>

Author: jhovold

drivers/rtc/rtc-cpcap.c

@@ -320,7 +320,6 @@ static struct platform_driver cpcap_rtc_driver = {
 
 module_platform_driver(cpcap_rtc_driver);
 
-MODULE_ALIAS("platform:cpcap-rtc");
 MODULE_DESCRIPTION("CPCAP RTC driver");
 MODULE_AUTHOR("Sebastian Reichel <sre@kernel.org>");
 MODULE_LICENSE("GPL");