no need for pexepect-gap in linear_code.py

Author: dimpase

src/sage/coding/linear_code.py

@@ -231,7 +231,6 @@ class should inherit from this class. Also ``AbstractLinearCode`` should never
 
 lazy_import('sage.groups.perm_gps.permgroup_named', 'SymmetricGroup')
 lazy_import('sage.groups.perm_gps.permgroup', 'PermutationGroup')
-lazy_import('sage.interfaces.gap', 'gap')
 
 
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