fix: simplify logics to get the start of the binding.

Author: blakeli0

sdk-platform-java/api-common-java/src/main/java/com/google/api/pathtemplate/PathTemplate.java

@@ -341,20 +341,8 @@ public String getCanonicalResourceName(Set<String> knownResources) {
       return "";
     }
 
-    int firstBindingIndex = -1;
-    for (int i = 0; i < segments.size(); i++) {
-      if (segments.get(i).kind() == SegmentKind.BINDING) {
-        firstBindingIndex = i;
-        break;
-      }
-    }
-
-    if (firstBindingIndex == -1) {
-      return "";
-    }
-
     int startIndex = 0;
-    for (int i = firstBindingIndex - 1; i >= 0; i--) {
+    for (int i = 0; i < segments.size(); i++) {
       Segment seg = segments.get(i);
       if (seg.kind() == SegmentKind.LITERAL) {
         String value = seg.value();

sdk-platform-java/api-common-java/src/test/java/com/google/api/pathtemplate/PathTemplateTest.java

@@ -943,15 +943,6 @@ void testGetResourceLiterals_customVerb() {
     Truth.assertThat(template.getResourceLiterals()).containsExactly("projects", "instances");
   }
 
-  @Test
-  void testGetResourceLiterals_multipleVersions() {
-    PathTemplate template =
-        PathTemplate.create(
-            "v1/compute/v2/projects/{project}/locations/{location}/widgets/{widget}");
-    Truth.assertThat(template.getResourceLiterals())
-        .containsExactly("projects", "locations", "widgets");
-  }
-
   @Test
   void testGetCanonicalResourceName_namedBindingsSimple() {
     Set<String> moreKnownResources = ImmutableSet.of("projects", "locations", "bars");
@@ -1004,16 +995,6 @@ void testGetCanonicalResourceName_unknownResource() {
         .isEqualTo("projects/{project}");
   }
 
-  @Test
-  void testGetCanonicalResourceName_ignoreVersions() {
-    Set<String> knownResources = ImmutableSet.of("projects", "locations", "instances", "widgets");
-    PathTemplate template =
-        PathTemplate.create(
-            "v1/compute/v2/projects/{project}/locations/{location}/widgets/{widget}");
-    Truth.assertThat(template.getCanonicalResourceName(knownResources))
-        .isEqualTo("projects/{project}/locations/{location}/widgets/{widget}");
-  }
-
   @Test
   void testGetCanonicalResourceName_customVerb() {
     Set<String> knownResources = ImmutableSet.of("projects", "locations", "instances", "widgets");