Remove xml instruction from web build

[nick-paul]

xml lib uses some javax classes which aren't compatible. Removing from web instructions for now.

mvn package -P web

[ERROR] Class javax.xml.transform.TransformerFactory was not found
    at aya.ext.xml.ToXmlInstruction.dictToXmlStr(ToXmlInstruction.java:68)
    at aya.ext.xml.ToXmlInstruction.execute(ToXmlInstruction.java:62)
    at aya.instruction.named.NamedOperatorInstruction.execute(NamedOperatorInstruction.java:35)
    at aya.eval.BlockEvaluator.eval(BlockEvaluator.java:152)
    at aya.StandaloneAya.runIsolated(StandaloneAya.java:70)
    at web.AyaWeb.lambda$main$0(AyaWeb.java:59)
    at web.AyaWeb$main$lambda$_1_0.call(AyaWeb.java:58)
    at web.AyaWeb$main$lambda$_1_0.call$exported$0
[ERROR] Class javax.xml.transform.Transformer was not found
    at aya.ext.xml.ToXmlInstruction.dictToXmlStr(ToXmlInstruction.java:69)
    at aya.ext.xml.ToXmlInstruction.execute(ToXmlInstruction.java:62)
    at aya.instruction.named.NamedOperatorInstruction.execute(NamedOperatorInstruction.java:35)
    at aya.eval.BlockEvaluator.eval(BlockEvaluator.java:152)
    at aya.StandaloneAya.runIsolated(StandaloneAya.java:70)
    at web.AyaWeb.lambda$main$0(AyaWeb.java:59)
    at web.AyaWeb$main$lambda$_1_0.call(AyaWeb.java:58)
    at web.AyaWeb$main$lambda$_1_0.call$exported$0
[ERROR] Class javax.xml.transform.Transformer was not found
    at aya.ext.xml.ToXmlInstruction.dictToXmlStr(ToXmlInstruction.java:71)
    at aya.ext.xml.ToXmlInstruction.execute(ToXmlInstruction.java:62)
    at aya.instruction.named.NamedOperatorInstruction.execute(NamedOperatorInstruction.java:35)
    at aya.eval.BlockEvaluator.eval(BlockEvaluator.java:152)
    at aya.StandaloneAya.runIsolated(StandaloneAya.java:70)
    at web.AyaWeb.lambda$main$0(AyaWeb.java:59)
    at web.AyaWeb$main$lambda$_1_0.call(AyaWeb.java:58)
    at web.AyaWeb$main$lambda$_1_0.call$exported$0
[ERROR] Class javax.xml.parsers.DocumentBuilderFactory was not found
    at aya.ext.xml.LoadXmlInstruction.parseXml(LoadXmlInstruction.java:84)
    at aya.ext.xml.LoadXmlInstruction.execute(LoadXmlInstruction.java:79)
    at aya.instruction.named.NamedOperatorInstruction.execute(NamedOperatorInstruction.java:35)
    at aya.eval.BlockEvaluator.eval(BlockEvaluator.java:152)
    at aya.StandaloneAya.runIsolated(StandaloneAya.java:70)
    at web.AyaWeb.lambda$main$0(AyaWeb.java:59)
    at web.AyaWeb$main$lambda$_1_0.call(AyaWeb.java:58)
    at web.AyaWeb$main$lambda$_1_0.call$exported$0