Update permanent_base.md

Author: nseidle

docs/permanent_base.md

@@ -28,8 +28,6 @@ While a survey-in is easy to set up and fine for an in-the-field way to establis
 
 [![L1/L2 antenna attached to the roof](img/Corrections/Antenna_Semi-Fixed_to_roof.jpg)](img/Corrections/Antenna_Semi-Fixed_to_roof - Big.jpg)
 
-[![L1/L2 antenna attached to the roof](img/Corrections/Antenna_Semi-Fixed_to_roof.jpg =450x450)](img/Corrections/Antenna_Semi-Fixed_to_roof - Big.jpg)
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 *[L1/L2 antenna](https://www.sparkfun.com/products/21801) semi-fixed to a flat roof*
 
 The PPP process works like this: