Remove redundant prototype from src/data/variable.h: var_get_value_name.
[pspp] / src /
drwxr-xr-x   ..
-rw-r--r-- 21 .gitignore
-rw-r--r-- 921 automake.mk
drwxr-xr-x - data
drwxr-xr-x - language
drwxr-xr-x - libpspp
drwxr-xr-x - math
drwxr-xr-x - output
drwxr-xr-x - ui