chore: remove preview/ directory

swank-tex/tests/logo-overlay/test.typ

@@ -0,0 +1,15 @@
+#import "/lib.typ": *
+
+#set page(height: auto)
+
+#image("logos.png")
+
+#set text(font: "New Computer Modern", size: 104pt, fill: rgb(255,0,0,64), stroke: 0.1pt+red)
+
+#move(dx: 0.094in, dy: -13.560in, TeX)
+#move(dx: 0.095in, dy: -14.544in, LaTeX)
+#move(dx: 0.095in, dy: -15.524in, LaTeX2E)
+#move(dx: 0.095in, dy: -16.507in, XeTeX)
+#move(dx: 0.095in, dy: -17.492in, XeLaTeX)
+#move(dx: 0.095in, dy: -18.475in, LuaTeX)
+#move(dx: 0.095in, dy: -19.457in, LuaLaTeX)