infospace: remove example output — will replay chapter by chapter

This commit clears the tangled example output so each chapter
can be re-committed cleanly via S3.2.

examples/infospace-with-history/output/entities/surplus-produce.md

@@ -1,33 +0,0 @@
-# Surplus Produce
-
-## Definition
-
-The portion of a worker's output that exceeds their own consumption needs and
-is therefore available for exchange. Smith argues that the certainty of being
-able to exchange surplus produce for the products of other workers' labour
-is what encourages every person to dedicate themselves to a particular
-occupation. Surplus is thus both the material prerequisite and the incentive
-for specialisation.
-
-## Source Chapter
-
-Book I, Chapter 2: "Of the Principle which gives Occasion to the Division
-of Labour"
-
-## Context
-
-Introduced in the passage describing the emergence of specialised trades in
-a tribal society. The armourer, carpenter, smith, and tanner each produce
-more of their specialty than they can personally consume, and exchange the
-surplus for other goods, reinforcing their commitment to specialisation.
-
-## Economic Domain
-
-Production
-
-## Smith's Original Wording
-
-"And thus the certainty of being able to exchange all that surplus part of
-the produce of his own labour, which is over and above his own consumption,
-for such parts of the produce of other men's labour as he may have occasion
-for, encourages every man to apply himself to a particular occupation."