fix(inko): update queries for 0.4.0

This changes the queries for version 0.4.0 of the grammar to fix the
crash discussed in nvim-treesitter/nvim-treesitter#8320.

Author: yorickpeterse

queries/inko/textobjects.scm

@@ -80,11 +80,7 @@
     (_) @conditional.inner)?) @conditional.outer
 
 (if
-  alternative: (else
-    (block) @conditional.inner))
-
-(if
-  consequence: (block)? @conditional.inner)
+  consequence: (block) @conditional.inner)
 
 (if
   condition: (_) @conditional.inner)