patch 8.2.4375: ctx_imports is not used

Problem:    ctx_imports is not used.
Solution:   Delete ctx_imports.  Add missing dependency.
diff --git a/src/evalfunc.c b/src/evalfunc.c
index 31205ea..88b8f89 100644
--- a/src/evalfunc.c
+++ b/src/evalfunc.c
@@ -3131,7 +3131,7 @@
     dot = vim_strchr(func, '.');
     if (dot != NULL)
     {
-	imported_T *import = find_imported(func, dot - func, TRUE, NULL);
+	imported_T *import = find_imported(func, dot - func, TRUE);
 
 	if (import != NULL && SCRIPT_ID_VALID(import->imp_sid))
 	{