Remove twofold 'from the'.

Author: Karsten7

source/reference/operator/aggregation/trim.txt

@@ -81,8 +81,7 @@ Behavior
 - You can override the default characters to trim using the ``chars``
   field.
 
-  For example, the following trims any ``g`` and ``e`` from the from
-  the start and end of the input. Since the input starts with a
+  For example, the following trims any ``g`` and ``e`` from the start and end of the input. Since the input starts with a
   whitespace, neither character can be trimmed from the start of the
   string.