Remove TimeInstant from gist Annotations (#499)

Author: marksem

gistCore.ttl

@@ -3278,9 +3278,9 @@ gist:hasPrecision
 	a owl:ObjectProperty ;
 	rdfs:range gist:Magnitude ;
 	skos:definition "Links a Magnitude to the degree of accuracy of the numeric value.   This allows for fuzzy numbers.  All magnitudes have a precision.  Usually we don't record them.  When we do this, it will be a value whose extent covers 2 standard deviations around the stated magnitude"^^xsd:string ;
-	skos:example "Temperature precise to tenth of a degree C; TimeInstant precise to 24 hours."^^xsd:string ;
+	skos:example "Temperature precise to tenth of a degree C."^^xsd:string ;
 	skos:prefLabel "has precision"^^xsd:string ;
-	skos:scopeNote "Most frequently apples to Magnitude(s) and TimeInstant. Could also apply to a measurement."^^xsd:string ;
+	skos:scopeNote "Most frequently apples to Magnitude(s). Could also apply to a measurement."^^xsd:string ;
 	.
 
 gist:hasRecipient