Delete old assets (#241)

Old asset files are images found under `/assets/images` and relate to
original docs, commynity docs and PQL guide which is now with community
docs.

Author: ljsinclair

assets/images/com-api/ui-cluster-health-problem.png

@@ -4,7 +4,7 @@
   ==========================
 
   Document the SQL language support in FeatureBase
-  
+
 *)
 
 sql3 = statement, [ ";" ] ;
@@ -14,8 +14,8 @@ statement = show_tables
       | show_create_table
       | drop_table
       | create_table_stmt
-      | create_view_stmt     
-      | kill_query_stmt 
+      | create_view_stmt
+      | kill_query_stmt
       | alter_table_stmt
       | select_stmt
       | insert_stmt
@@ -101,15 +101,15 @@ kill_query_stmt = "KILL", "QUERY", string_literal;
   TIMEQUANTUM - 'YMD' etc.
 
 *)
-column_constraint =  
+column_constraint =
         "MIN", integer_literal
       | "MAX", integer_literal
       | "TIMEUNIT", string_literal
       | "TIMEQUANTUM", string_literal, [ "TTL", string_literal ];
 
 table_options = "COMMENT", string_literal ;
 
-type_name = "INT" 
+type_name = "INT"
     | "BOOL"
     | "TIMESTAMP"
     | "DECIMAL"
@@ -178,17 +178,17 @@ Source could be an url.
 Pre-batching transformation of values using a values clause - to refer to the new column value from the source we can use `$value`.
 
   `bulk insert into testtable (_id, i1, i2, d1) map (0, 1, 2, 3) transform ($value, $value + 2, $value, $value) from '/users/foo/bar.csv' with format csv batchsize 1000 rowslimit 10000;`
-  
+
 We can support ndjson as a format - in this case the `map` clause contains jsonpath expressions.
 
   `bulk insert into testtable (_id, i1, 12, d1) map ('$.foo', '$.bar', '$.baz', '$.boo') transform ($value, $value + 2, $value, $value) from '/users/foo/bar.json' with format ndjson batchsize 1000 rowslimit 10000;`
-  
+
 Another variant with an inline 'stream' (multi-line string delimiter to be decided).
 
-  `bulk insert into testtable (_id, i1, 12, d1) map ('$.foo', '$.bar', '$.baz', '$.boo') transform ($value, $value + 2, $value, $value) from 
+  `bulk insert into testtable (_id, i1, 12, d1) map ('$.foo', '$.bar', '$.baz', '$.boo') transform ($value, $value + 2, $value, $value) from
   """
   {"foo": 1000, "bar": 10, "baz": 20, "boo": 3}
-  """ 
+  """
   with input stream format ndjson batchsize 1000 rowslimit 10000;`
 
 *)
@@ -199,13 +199,13 @@ column_list =
 map_list =
   "(", expr type_name, { ",", expr type_name }, ")" ;
 
-value_list = 
+value_list =
   "(", expr, { ",", expr }, ")" ;
 
-bulk_insert_options = 
+bulk_insert_options =
   bulk_insert_option, { bulk_insert_option } ;
 
-bulk_insert_option = 
+bulk_insert_option =
       "BATCHSIZE", integer_literal
     | "ROWSLIMIT", integer_literal
     | "INPUT", string_literal
@@ -234,7 +234,7 @@ delete_stmt = "DELETE" ;
 *)
 select_stmt = "SELECT", [ "DISTINCT" ], [ top_clause ], select_list, [ from_clause ], [ where_clause ], [group_by_clause], [having_clause], [order_by_clause] ;
 
-top_clause = ( "TOP" | "TOPN" ), "(", expr, ")" ;  
+top_clause = ( "TOP" | "TOPN" ), "(", expr, ")" ;
 
 select_list = select_item, { ",", select_item } ;
 
@@ -248,15 +248,15 @@ qualifier = identifier ;
 
 from_clause = "FROM", table_or_subquery, { ",", table_or_subquery } ;
 
-table_or_subquery = 
+table_or_subquery =
       ( identifier | table_valued_function ), [ [ "AS" ], table_alias ], [ table_options ]
       | "(", select_stmt, ")", [ [ "AS" ], table_alias ] ;
 
 table_alias = identifier ;
 
 table_options =  "WITH", "(", table_option, { ",", table_option }, ")";
 
-table_option =  
+table_option =
       "SHARDS", "(", integer_literal, { ",", integer_literal }, ")"
       | "FLATTEN", "(", identifier, ")";
 
@@ -277,7 +277,7 @@ order_by_expression = expr, [ "ASC" | "DESC" ] ;
 
   Expressions
   ----------------
-  
+
 *)
 expr = integer_literal
     | string_literal
@@ -303,7 +303,7 @@ paren_select_stmt = "(", select_stmt, ")" ;
 case_expr = "CASE", [ expr ], { "WHEN", expr, "THEN", expr }, [ "ELSE", expr ], "END" ;
 
 unary_op = "-"
-    | "+" 
+    | "+"
     | "!" ;
 
 binary_op = "="
@@ -317,10 +317,10 @@ binary_op = "="
     | "+"
     | "-"
     | "*"
-    | "/" 
+    | "/"
     | "%"
     | "||" ;
-  
+
 set_literal = "[", expr, { ",", expr }, "]" ;
 
 tuple_literal = "{", expr, { ",", expr }, "}" ;
@@ -340,14 +340,14 @@ function_call = agg_function
 agg_function = ( "AVG" | "COUNT" | "MAX" | "MIN" | "SUM" ), "(", ( ( [ "DISTINCT" ], expr ) | "*" ), ")"
     | "PERCENTILE", "(", expr, ",", expr, ")" ;
 
-non_agg_function = 
-      "SETCONTAINS" , "(", expr, ",", expr, ")" 
-    | "SETCONTAINSALL" , "(", expr, ",", expr, ")" 
-    | "SETCONTAINSANY" , "(", expr, ",", expr, ")" 
+non_agg_function =
+      "SETCONTAINS" , "(", expr, ",", expr, ")"
+    | "SETCONTAINSALL" , "(", expr, ",", expr, ")"
+    | "SETCONTAINSANY" , "(", expr, ",", expr, ")"
     | "DATEPART" , "(", expr, ",", expr, ")" ;
 
-table_valued_function = 
-      "SUBTABLE" , "(", table_name, ".", column_name, ")"; 
+table_valued_function =
+      "SUBTABLE" , "(", table_name, ".", column_name, ")";
 
 
 identifier = letter , { letter | digit | "_" } ;
@@ -362,5 +362,3 @@ letter = "A" | "B" | "C" | "D" | "E" | "F" | "G"
        | "x" | "y" | "z" ;
 
 digit = "0" | "1" | "2" | "3" | "4" | "5" | "6" | "7" | "8" | "9" ;
-
-