remove copy of vcnl4020 in wrong location

This is what would cause the diagnostic at bundle build time:
```
.../Adafruit_CircuitPython_Bundle/libraries/drivers/libraries has version that doesn't follow SemVer (semver.org)
```

There's a copy of the driver at the correct location.

Author: jepler

.gitmodules

@@ -974,9 +974,6 @@
 [submodule "libraries/drivers/cst8xx"]
 	path = libraries/drivers/cst8xx
 	url = https://github.com/adafruit/Adafruit_CircuitPython_CST8XX.git
-[submodule "libraries/drivers/vcnl4020"]
-	path = libraries/drivers/libraries/drivers/vcnl4020
-	url = https://github.com/adafruit/Adafruit_CircuitPython_VCNL4020.git
 [submodule "libraries/helpers/qualia"]
 	path = libraries/helpers/qualia
 	url = https://github.com/adafruit/Adafruit_CircuitPython_Qualia.git