[WebAssembly] Don't set a maximum side when importing the table

[sbc100]

Summary

We shouldn't be setting setting a max size for a table that is
being imported.

[ruiu]

LGTM

test/wasm/import-table.test

 # RUN: llc -filetype=obj %p/Inputs/start.ll -o %t.start.o
 # RUN: wasm-ld --import-table -o %t.wasm %t.start.o
 # RUN: obj2yaml %t.wasm | FileCheck %s
 
 # Verify the --import-table flag creates a table import
 
 # CHECK:       - Type:            IMPORT
 # CHECK-NEXT:    Imports:
 # CHECK-NEXT:      - Module:          env
 # CHECK-NEXT:        Field:           __indirect_function_table
 # CHECK-NEXT:        Kind:            TABLE
 # CHECK-NEXT:        Table:
 # CHECK-NEXT:          ElemType:        ANYFUNC
 # CHECK-NEXT:          Limits:
-# CHECK-NEXT:            Flags:           [ HAS_MAX ]
 # CHECK-NEXT:            Initial:         0x00000001
-# CHECK-NEXT:            Maximum:         0x00000001
 

test/wasm/shared.ll

 ; CHECK:        - Type:            IMPORT
 ; CHECK-NEXT:     Imports:
 ; CHECK-NEXT:       - Module:          env
 ; CHECK-NEXT:         Field:           __indirect_function_table
 ; CHECK-NEXT:         Kind:            TABLE
 ; CHECK-NEXT:         Table:
 ; CHECK-NEXT:           ElemType:        ANYFUNC
 ; CHECK-NEXT:           Limits:
-; CHECK-NEXT:             Flags:           [ HAS_MAX ]
 ; CHECK-NEXT:             Initial:         0x00000002
-; CHECK-NEXT:             Maximum:         0x00000002
 ; CHECK-NEXT:       - Module:          env
 ; CHECK-NEXT:         Field:           __stack_pointer
 ; CHECK-NEXT:         Kind:            GLOBAL
 ; CHECK-NEXT:         GlobalType:      I32
 ; CHECK-NEXT:         GlobalMutable:   true
 ; CHECK-NEXT:       - Module:          env
 ; CHECK-NEXT:         Field:           __memory_base
 ; CHECK-NEXT:         Kind:            GLOBAL

wasm/Writer.cpp

void Writer::createImportSection() {
 
   if (Config->ImportTable) {
     uint32_t TableSize = TableBase + IndirectFunctions.size();
     WasmImport Import;
     Import.Module = "env";
     Import.Field = kFunctionTableName;
     Import.Kind = WASM_EXTERNAL_TABLE;
     Import.Table.ElemType = WASM_TYPE_ANYFUNC;
-    Import.Table.Limits = {WASM_LIMITS_FLAG_HAS_MAX, TableSize, TableSize};
+    Import.Table.Limits = {0, TableSize, 0};
     writeImport(OS, Import);
   }
 
   for (const Symbol *Sym : ImportedSymbols) {
     WasmImport Import;
     Import.Module = "env";
     Import.Field = Sym->getName();
     if (auto *FunctionSym = dyn_cast<FunctionSymbol>(Sym)) {