I would like to risk an answer that does not use the language of algebraic geometry. For a pair (complex analytic variety XX; closed analytic subvariety YY), U=XsetminusYU=XsetminusY,
there exists a triangulation such that YY is a subcomplex (see, for example Triangulations of algebraic sets - Hironaka 1974, can be found with google books). In other words XX is a simplicial complex, and YY
is a subcomplex. Now, if XX is normal its singularities are in real codimension at least 44. I.e. XX is a PLPL manifold in codimension 44.
In order to show that the fundamental group of XsetminusYXsetminusY surjects onto the fundamental group of XX, it is sufficient to show that every loop in XX can be homotoped into XsetminusYXsetminusY. Since YY it is contained in the simplicial subcomplex of codimension 22 it is enough to show that any loop in XX can be homotoped so it does not touch any simplex of codim 22, but this is true for every PLPL space that is a manifold in codim 22.
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