removed search from docs. simple search is insufficient, external search requires cgi which doesn't work on github pages

CSharp/Documentation/Doxyfile

@@ -1485,7 +1485,7 @@ MATHJAX_CODEFILE       =
 # The default value is: YES.
 # This tag requires that the tag GENERATE_HTML is set to YES.
 
-SEARCHENGINE           = YES
+SEARCHENGINE           = NO
 
 # When the SERVER_BASED_SEARCH tag is enabled the search engine will be
 # implemented using a web server instead of a web client using Javascript. There
@@ -1497,7 +1497,7 @@ SEARCHENGINE           = YES
 # The default value is: NO.
 # This tag requires that the tag SEARCHENGINE is set to YES.
 
-SERVER_BASED_SEARCH    = YES
+SERVER_BASED_SEARCH    = NO
 
 # When EXTERNAL_SEARCH tag is enabled doxygen will no longer generate the PHP
 # script for searching. Instead the search results are written to an XML file
@@ -1513,7 +1513,7 @@ SERVER_BASED_SEARCH    = YES
 # The default value is: NO.
 # This tag requires that the tag SEARCHENGINE is set to YES.
 
-EXTERNAL_SEARCH        = YES
+EXTERNAL_SEARCH        = NO
 
 # The SEARCHENGINE_URL should point to a search engine hosted by a web server
 # which will return the search results when EXTERNAL_SEARCH is enabled.