Update docs/zkEVM/architecture/protocol/etrog-upgrade.md

Co-authored-by: Dra Murphy <149679879+kmurphypolygon@users.noreply.github.com>

Author: EmpieichO

docs/zkEVM/architecture/protocol/etrog-upgrade.md

@@ -67,8 +67,6 @@ The figure below shows the structure of the blocks in Etrog versus those of the
 
 ![Figure: etrog-blocks-vs-dragonfruit](../../../img/zkEVM/etrog-blocks-vs-dragonfruit.png)
 
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 ## Etrog timestamps
 
 In order to circumvent the above-mentioned issue related to the _one timestamp for many blocks_ problem, each block in the Etrog upgrade's batch receives its own unique timestamp. This is in addition to allowing more than one transaction per block.