Revert "core: Add TH{ for making assoc tuples."

This reverts commit e93d8f82bc.

core/bootstrap/syntax.factor

@@ -48,7 +48,6 @@ IN: bootstrap.syntax
         "final"
         "SLOT:"
         "T{"
-        "TH{"
         "UNION:"
         "INTERSECTION:"
         "USE:"

core/classes/tuple/parser/parser.factor

@@ -115,15 +115,5 @@ M: tuple-class boa>object
         [ bad-literal-tuple ]
     } case ;
 
-: parse-tuple-hash-literal-slots ( class slots -- tuple )
-    scan-token {
-        { "{" [ 2dup parse-slot-values assoc>object ] }
-        { "}" [ drop new ] }
-        [ bad-literal-tuple ]
-    } case ;
-
 : parse-tuple-literal ( -- tuple )
     scan-word dup all-slots parse-tuple-literal-slots ;
-
-: parse-tuple-hash-literal ( -- tuple )
-    scan-word dup all-slots parse-tuple-hash-literal-slots ;

core/syntax/syntax.factor

@@ -105,7 +105,6 @@ IN: bootstrap.syntax
     "BV{" [ \ } [ >byte-vector ] parse-literal ] define-core-syntax
     "H{" [ \ } [ parse-hashtable ] parse-literal ] define-core-syntax
     "T{" [ parse-tuple-literal suffix! ] define-core-syntax
-    "TH{" [ parse-tuple-hash-literal suffix! ] define-core-syntax
     "W{" [ \ } [ first <wrapper> ] parse-literal ] define-core-syntax
     "HS{" [ \ } [ >hash-set ] parse-literal ] define-core-syntax