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/rent-of-land.md

@@ -1,19 +0,0 @@
-# rent of land
-
-**Definition**  
-Rent of land is the portion of a commodity’s price that compensates the landowner for the use of the land’s natural produce. It represents a payment for the exclusive right to exploit the land’s resources, such as timber, grass, or other natural fruits, which would otherwise be freely gathered.
-
-**Source Chapter**  
-*The Wealth of Nations*, Book 1, Chapter 6.
-
-**Context**  
-Smith introduces rent of land after describing the transition to private property, noting that landlords “demand a rent even for its natural produce.” He explains that this rent becomes a component of the price of commodities like corn.
-
-**Economic Domain**  
-Distribution
-
-**Smith’s Original Wording**  
-> “When the land of any country has all become private property, the landlords… demand a rent even for its natural produce.”
-
-**Modern Interpretation**  
-Rent of land corresponds to economic rent in contemporary theory—the surplus payment to a factor of production (land) that exceeds its opportunity cost. It is a key element in the factor‑income distribution of national accounts.