[doc] Remove remnants of the THtml documentation engine

Author: dpiparo

config/rootrc.in

@@ -174,20 +174,6 @@ Hist.Stats.KurtosisX:        Kurtosis x
 Hist.Stats.KurtosisY:        Kurtosis y
 Hist.Stats.KurtosisZ:        Kurtosis z
 
-# THtml specific settings (for more see doc of THtml class).
-Root.Html.SourceDir:    .
-Root.Html.Root:         http://root.cern.ch/root/html
-Root.Html.ViewCVS:      http://root.cern.ch/viewcvs/trunk/%f?view=log
-Root.Html.Search:       http://www.google.com/search?q=%s+site%3A%u+-site%3A%u%2Fsrc%2F+-site%3A%u%2Fexamples%2F
-#Root.Html.OutputDir:   htmldoc/
-#Root.Html.Homepage:
-#Root.Html.Header:
-#Root.Html.Footer:
-#Root.Html.Description: //____________________
-#Root.Html.Author:      // Author:
-#Root.Html.LastUpdate:  // @(#)
-#Root.Html.Copyright:   * Copyright
-
 # GUI specific settings.
 Gui.Backend:                native
 Gui.Factory:                native

core/cont/src/TObjectTable.cxx

@@ -50,7 +50,6 @@ via the command gObjectTable->Print()
   TContextMenu                3          3       48           144          144
   TMethodArg               2166       2166       44         95304        95304
   TPaveLabel                  1          1      120           120          120
-  THtml                       1          1       32            32           32
   TROOT                       1          0      208           208            0
   TApplication                1          1       28            28           28
   TFileHandler                1          1       20            20           20

tutorials/CMakeLists.txt

@@ -443,7 +443,6 @@ endif()
 #---These ones are disabled !!! ------------------------------------
 set(extra_veto
   legacy/benchmarks.C
-  legacy/htmlex.C
   legacy/rootalias.C          # Helper macro
   rootlogon.C          # Helper macro
   rootlogoff.C         # Helper macro