[code-quality] Tidy up some duplicate CONFIG_SCHEMA assignments (#7106)

esphome/components/ade7953/sensor.py

@@ -1,5 +1,5 @@
 import esphome.config_validation as cv
 
-CONFIG_SCHEMA = CONFIG_SCHEMA = cv.invalid(
+CONFIG_SCHEMA = cv.invalid(
     "The ade7953 sensor component has been renamed to ade7953_i2c."
 )

esphome/components/bmp3xx/sensor.py

@@ -2,6 +2,6 @@ import esphome.config_validation as cv
 
 CODEOWNERS = ["@latonita"]
 
-CONFIG_SCHEMA = CONFIG_SCHEMA = cv.invalid(
+CONFIG_SCHEMA = cv.invalid(
     "The bmp3xx sensor component has been renamed to bmp3xx_i2c."
 )

esphome/components/ens160/sensor.py

@@ -2,6 +2,6 @@ import esphome.config_validation as cv
 
 CODEOWNERS = ["@latonita"]
 
-CONFIG_SCHEMA = CONFIG_SCHEMA = cv.invalid(
+CONFIG_SCHEMA = cv.invalid(
     "The ens160 sensor component has been renamed to ens160_i2c."
 )

esphome/components/kalman_combinator/sensor.py

@@ -1,6 +1,6 @@
 import esphome.config_validation as cv
 
-CONFIG_SCHEMA = CONFIG_SCHEMA = cv.invalid(
+CONFIG_SCHEMA = cv.invalid(
     "The kalman_combinator sensor has moved.\nPlease use the combination platform instead with type: kalman.\n"
     "See https://esphome.io/components/sensor/combination.html"
 )